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question_answer1)
Which of the following are two consecutive prime numbers that differ by 2?
A)
Co-primes done
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B)
Twin primes done
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C)
Composite numbers done
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D)
Both (a) and (b) done
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question_answer2)
Identify the numbers with only 1 as their common factor.
A)
Co-prime numbers done
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B)
Twin prime numbers done
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C)
Composite numbers done
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D)
Prime numbers done
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question_answer3)
Find the smallest whole number that is divisible by \[10\] and\[12\].
A)
\[40\] done
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B)
\[30\] done
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C)
\[72\] done
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D)
\[60\] done
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question_answer4)
Which of the following are not multiples of\[2\]?
A)
Even numbers done
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B)
Odd numbers done
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C)
Prime numbers done
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D)
Composite numbers done
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question_answer5)
Which type of numbers have more than two factors?
A)
Even numbers done
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B)
Prime numbers done
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C)
Composite numbers done
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D)
Odd numbers done
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question_answer6)
Stamps in an album can be arranged as \[12\] per page or \[18\] per page exactly. What is the greatest number of stamps one can have if they are fewer than\[500\]?
A)
\[468\] done
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B)
\[540\] done
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C)
\[504\] done
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D)
\[432\] done
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question_answer7)
What is the \[L.C.M.\] of two co-prime numbers?
A)
Their sum done
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B)
Their difference done
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C)
Their product done
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D)
Their quotient done
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question_answer8)
Study the numbers given in the box.
Identify the number that is not a divisor of the given numbers.
A)
\[23\] done
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B)
\[24\] done
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C)
\[36\] done
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D)
\[12\] done
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question_answer9)
A Find the \[L.C.M.\] of \[12,\,\,24\] and\[36\].
A)
\[36\] done
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B)
\[24\] done
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C)
\[72\] done
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D)
\[108\] done
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question_answer10)
Identify an example for twin primes.
A)
\[5,\,\,11\] done
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B)
\[3,\,\,5\] done
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C)
\[11,\,\,17\] done
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D)
\[3,\,\,7\] done
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question_answer11)
What is the \[H.C.F.\] of \[36\] and\[144\]?
A)
\[36\] done
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B)
\[144\] done
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C)
\[4\] done
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D)
\[2\] done
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question_answer12)
What is the \[H.C.F.\] of two co-prime numbers?
A)
\[1\] done
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B)
\[0\] done
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C)
\[2\] done
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D)
Their product done
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question_answer13)
is the least common multiple of \[45\] and\[50\]. What is the value of\[10P+100\]?
A)
\[4500\] done
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B)
\[4600\] done
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C)
\[4400\] done
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D)
\[1000\] done
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question_answer14)
What are the common factors of\[9\]and\[36\]?
A)
\[1,\,\,3,\,\,9\] done
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B)
\[1,\,\,4,\,\,3,\,\,5,\,\,9\] done
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C)
\[1,\,\,4,\,\,5\] done
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D)
\[1,\,\,3,\,\,4,\,\,9\] done
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question_answer15)
Find three common multiples of\[18\]and\[6\].
A)
\[18,\,\,6,\,\,9\] done
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B)
\[18,\,\,36,\,\,6\] done
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C)
\[36,\,\,54,\,\,72\] done
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D)
\[1,\,\,6,\,\,18\] done
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question_answer16)
When a number is increased by\[8\], it is divisible by\[35\]. What is the remainder when the same number is divided by\[5\]?
A)
\[2\] done
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B)
\[4\] done
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C)
\[3\] done
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D)
\[0\] done
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question_answer17)
The largest number less than \[100\] divisible by \[15\] is decreased by\[5\]. Which of these is a factor of the resultant number?
A)
\[23\] done
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B)
\[17\] done
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C)
\[25\] done
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D)
\[19\] done
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question_answer18)
How many prime numbers are there from \[50\] to\[100\]?
A)
\[18\] done
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B)
\[12\] done
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C)
\[10\] done
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D)
\[20\] done
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question_answer19)
How is \[20\] written as the product of primes?
A)
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B)
\[2\times 2\times 3\times 5\] done
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C)
\[2\times 2\times 5\] done
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D)
\[2\times 2\times 3\] done
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question_answer20)
Identify the correct statement.
A)
The L.C.M. of two co-primes is their product. done
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B)
The H.C.F. of twin primes is their product. done
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C)
The largest factor of a number is 1. done
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D)
The smallest factor of a number is the number itself. done
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question_answer21)
Which of the following sets of numbers have the same H.C.F.?
60 | | 120 | 135 |
650 | 230 | 180 | 315 |
250 | 450 | 240 | 495 |
P | Q | R | S |
A)
\[Q\]and\[R\] done
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B)
\[P\]and\[R\] done
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C)
\[R\]and\[S\] done
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D)
\[P\]and\[Q\] done
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question_answer22)
How many times the H.C.F. of\[11,\,\,33\]and\[88\]is their L.C.M?
A)
\[11\] done
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B)
\[24\] done
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C)
\[22\] done
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D)
\[3629\] done
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question_answer23)
Identify an example for co-prime numbers.
A)
\[25,\,\,14\] done
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B)
\[18,\,\,16\] done
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C)
\[9,\,\,18\] done
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D)
\[11,\,\,77\] done
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question_answer24)
The L.C.M. of two numbers is \[10\] times their H.C.F. Find the numbers.
A)
\[24,\,\,96\] done
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B)
\[16,\,\,15\] done
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C)
\[24,\,\,480\] done
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D)
\[24,\,\,240\] done
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question_answer25)
What is the sum of the first five multiples of\[8\]?
A)
\[90\] done
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B)
\[60\] done
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C)
\[30\] done
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D)
\[120\] done
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question_answer26)
Find the least \[4-\]digit number that is divisible by\[8\].
A)
\[1000\] done
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B)
\[1008\] done
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C)
\[4000\] done
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D)
\[1016\] done
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question_answer27)
Find the product of all the factors of\[40\].
A)
\[265\times 100\] done
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B)
\[256\times 10000\] done
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C)
\[256\times 1000\] done
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D)
\[265\times 1000\] done
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question_answer28)
How many factors does \[256\] have?
A)
\[9\] done
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B)
\[8\] done
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C)
\[10\] done
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D)
\[12\] done
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question_answer29)
How many hundreds are there in the sum of the factors of\[140\]?
A)
\[300\] done
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B)
\[30\] done
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C)
\[336\] done
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D)
\[3\] done
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question_answer30)
\[X\]is the sum of the factors of\[84\].Which of the following is a correct statement?
A)
The digits in hundreds and tens places of the sum are the same. done
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B)
The digit in ones place is the same as the digit in tens place. done
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C)
The digit in hundreds place is the same as the digit in ones place. done
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D)
The digit in ones place is the least. done
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question_answer31)
\[A\]and\[B\]are two\[1-\]digit numbers such that\[A\times A\times B\times B=2025\]. What are the respective values of\[A\]and\[B\]?
A)
\[5,\,\,9\] done
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B)
\[5,\,\,3\] done
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C)
\[9,\,\,4\] done
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D)
\[2,\,\,5\] done
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question_answer32)
Observe the twin primes in the table.
(3, 5) | (5, 7) | (11, 13) | (17, 19) |
P | Q | R | S |
Which of the given twin primes are present in the prime factorisation of\[2145\]?
A)
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B)
\[P\]and\[S\] done
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C)
\[P\]and\[Q\] done
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D)
\[P\]and\[R\] done
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question_answer33)
Identify the number whose prime factorisation has three\[2's\], four \[3's\] and\[a\text{ }5\].
A)
\[3240\] done
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B)
\[2430\] done
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C)
\[3420\] done
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D)
\[2304\] done
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question_answer34)
A box had some pens in it. When the pens are distributed equally to \[18\] children, none remained but while distributing to \[19\] children, \[5\] children got \[1\] pen less than the others. How many pens were there in the box?
A)
\[70\] done
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B)
\[76\] done
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C)
\[90\] done
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D)
\[85\] done
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question_answer35)
Aakash's age is a factor of\[14\]. Next year his age will be a multiple of\[5\]. How old will he be in \[6\] years' time?
A)
\[15\,\,years\] done
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B)
\[21\,\,years\] done
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C)
\[14\,\,years\] done
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D)
\[20\,\,years\] done
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question_answer36)
What is the sum of the numbers that are multiples of \[7\] as well as factors of\[42\]?
A)
\[84\] done
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B)
\[42\] done
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C)
\[14\] done
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D)
\[7\] done
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question_answer37)
Study the information given in the box.
What is the value of\[X\]?
A)
\[42\] done
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B)
\[28\] done
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C)
\[21\] done
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D)
\[12\] done
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question_answer38)
\[P\]is a \[2-\]digit common factor of\[36\]and \[24\]. \[Q\] is a number that is both a factor and multiple of \[28\]. What is the value of\[P+Q\]?
A)
\[24\] done
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B)
\[28\] done
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C)
\[12\] done
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D)
\[40\] done
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question_answer39)
When a number \[X\] is added to\[8\], the sum is divisible by\[14\]. What could the number \[X\] be?
A)
\[48\] done
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B)
\[58\] done
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C)
\[78\] done
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D)
\[68\] done
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question_answer40)
The quotient when a number is divided by \[5\] is\[6\]. What is the quotient when the same number is divided by\[30\]?
A)
\[1\] done
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B)
\[100\] done
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C)
\[10\] done
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D)
\[1000\] done
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question_answer41)
How many twin primes are there between \[1\] and\[100\]?
A)
\[6\] done
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B)
\[10\] done
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C)
\[7\] done
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D)
\[8\] done
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question_answer42)
Which of these numbers has \[2,\,\,3,\,\,4\] and \[10\] as factors?
A)
\[20709\] done
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B)
\[108240\] done
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C)
\[18045\] done
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D)
\[20801\] done
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question_answer43)
Study the following.
Which digit in the number \[2M+15N\] is in the thousands place?
A)
\[0\] done
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B)
\[1\] done
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C)
\[2\] done
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D)
\[6\] done
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question_answer44)
Two toy trains start at the same time. The first one stops after every \[5\] seconds and the second one stops after every \[4\] seconds. How many times do they stop together in \[1\] minute?
A)
\[4\] done
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B)
\[2\] done
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C)
\[3\] done
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D)
\[5\] done
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question_answer45)
\[17,\,\,19,\,\,\text{ }p,\,\,29,\,\,31,\,\,q,\,\,41\] is a list of prime numbers in ascending order. What is the value of\[q-p\]?
A)
\[60\] done
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B)
\[37\] done
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C)
\[23\] done
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D)
\[140\] done
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question_answer46)
Which of the following numbers has \[8\] as factor?
A)
\[136\] done
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B)
\[228\] done
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C)
\[842\] done
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D)
\[748\] done
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question_answer47)
The L.C.M. of \[3,\,\,6\] and \[x\] is\[18\]. What is the possible value of\[x\]?
A)
\[36\] done
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B)
\[6\] done
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C)
\[18\] done
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D)
\[3\] done
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question_answer48)
Given that \[(p+3)\] is the highest common factor of \[81\] and\[108\], find the value of\[p\].
A)
\[6\] done
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B)
\[12\] done
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C)
\[9\] done
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D)
\[14\] done
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question_answer49)
\[m\]is a multiple of \[8\] and a factor of\[48\]. Find the possible value for\[m\].
A)
\[4\] done
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B)
\[32\] done
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C)
\[16\] done
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D)
\[40\] done
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question_answer50)
The diagram shows some of the factors of\[60\].
What are the possible values of \[a\] and\[b\]?
A)
\[a=2,\,\,b=16\] done
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B)
\[a=4,\,\,b=20\] done
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C)
\[a=6,\,\,b=25\] done
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D)
\[a=8,\,\,b=30\] done
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question_answer51)
From the given diagram, what is the value of\[p+q+r\]?
A)
\[7\] done
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B)
\[8\] done
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C)
\[9\] done
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D)
\[14\] done
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question_answer52)
The given figure shows some of the factors of\[156\].
What is the value of\[x\]?
A)
\[16\] done
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B)
\[8\] done
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C)
\[15\] done
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D)
\[39\] done
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question_answer53)
The figure given shows \[5\] numbers.
Which of the \[5\] numbers are the prime factors of\[130\]?
A)
\[2\]and\[3\] done
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B)
\[10\]and\[13\] done
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C)
\[2\]and\[13\] done
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D)
\[3\]and\[10\] done
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