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question_answer1)
Which one of the following are prime numbers?
A)
2, 5, 9 done
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B)
5, 6, 11 done
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C)
4, 5, 7 done
clear
D)
2, 3, 5 done
clear
E)
None of these done
clear
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question_answer2)
What least number should be subtracted 2465445455207 so that the number becomes exactly divisible by 5?
A)
3 done
clear
B)
4 done
clear
C)
5 done
clear
D)
2 done
clear
E)
None of these done
clear
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question_answer3)
Find the smallest number that is divisible by both 225 and 625.
A)
5525 done
clear
B)
5625 done
clear
C)
3025 done
clear
D)
7225 done
clear
E)
None of these done
clear
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question_answer4)
Which one of the following sets contains all the prime numbers between 1 to 20?
A)
{1, 2, 3, 5, 7, 9, 11, 17, 19} done
clear
B)
{2, 3, 5, 7, 11, 13, 17, 19} done
clear
C)
{2, 5, 7, 9, 11, 13, 17, 19} done
clear
D)
{3, 5, 7, 9, 11, 13, 17, 19} done
clear
E)
None of these done
clear
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question_answer5)
What least number should be added to 56666888856598, such that the resulting number becomes a multiple of 4?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
E)
None of these done
clear
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question_answer6)
Which specific term is used for the number, whose sum of all the factors, except the number itself, is equal to the number?
A)
Perfect number done
clear
B)
Prime number done
clear
C)
Composite number done
clear
D)
All of these done
clear
E)
None of these done
clear
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question_answer7)
Find five multiple of 2384.
A)
4768, 7152, 9530, 11920, 14304 done
clear
B)
4768, 7152, 9536, 11924, 14304 done
clear
C)
4768, 7152, 9536, 11920, 16304 done
clear
D)
4768, 7152, 9536, 11920, 14304 done
clear
E)
None of these done
clear
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question_answer8)
If the two numbers have only one common factor, the numbers are called ______
A)
Perfect numbers done
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B)
Prime numbers done
clear
C)
Composite numbers done
clear
D)
Relatively co-prime numbers done
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E)
None of these done
clear
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question_answer9)
Add the first three common multiples of 8 and 12 and find what least number should be added to it, so that, it becomes a multiple of 11?
A)
1 done
clear
B)
5 done
clear
C)
7 done
clear
D)
10 done
clear
E)
None of these done
clear
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question_answer10)
Which one of the following in not a composite number?
A)
92 done
clear
B)
97 done
clear
C)
104 done
clear
D)
57 done
clear
E)
None of these done
clear
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question_answer11)
Which one of the following sets has contained all the factors of 40?
A)
{1, 2, 3, 4, 5, 8, 20, 40} done
clear
B)
{1, 2, 4, 5, 8, 10, 40} done
clear
C)
{1, 2, 4, 5, 8, 10, 20} done
clear
D)
{1, 2, 4, 5, 8, 10, 20, 40} done
clear
E)
None of these done
clear
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question_answer12)
Is 15 a factor of 4335?
A)
Yes done
clear
B)
No done
clear
C)
Can?t say done
clear
D)
All of these done
clear
E)
None of these done
clear
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question_answer13)
Find the common multiple of 7 and 9.
A)
63 done
clear
B)
126 done
clear
C)
189 done
clear
D)
215 done
clear
E)
None of these done
clear
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question_answer14)
How many factors does 50 has?
A)
4 done
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B)
5 done
clear
C)
6 done
clear
D)
7 done
clear
E)
None of these done
clear
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question_answer15)
Which one of the following is a factor of 19754?
A)
34 done
clear
B)
27 done
clear
C)
18 done
clear
D)
26 done
clear
E)
None of these done
clear
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question_answer16)
Find the greatest number that divides 24, 28, 30, and 36 remainder.
A)
2 done
clear
B)
4 done
clear
C)
6 done
clear
D)
8 done
clear
E)
None of these done
clear
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question_answer17)
Find the least number which is completely divisible by both 56 and 63.
A)
504 done
clear
B)
209 done
clear
C)
603 done
clear
D)
412 done
clear
E)
None of these done
clear
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question_answer18)
Product of two numbers is 54. If one of the numbers is 3, find the other number.
A)
6 done
clear
B)
9 done
clear
C)
18 done
clear
D)
54 done
clear
E)
None of these done
clear
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question_answer19)
Which one of the following is not a composite number?
A)
92 done
clear
B)
97 done
clear
C)
104 done
clear
D)
57 done
clear
E)
None of these done
clear
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question_answer20)
What least number should be subtracted from 24652 such that it becomes divisible by 196?
A)
160 done
clear
B)
170 done
clear
C)
152 done
clear
D)
165 done
clear
E)
None of these done
clear
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question_answer21)
What is the multiple of 17 after 13?
A)
141 done
clear
B)
201 done
clear
C)
151 done
clear
D)
221 done
clear
E)
None of these done
clear
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question_answer22)
Which one of the following options divide 8722 completely?
A)
45, 56 done
clear
B)
56, 65 done
clear
C)
67, 78 done
clear
D)
89, 98 done
clear
E)
None of these done
clear
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question_answer23)
Which specific term is used for the number whose sum of all the factors except the number itself is equal to the number?
A)
Prime number done
clear
B)
Composite number done
clear
C)
Perfect number done
clear
D)
All of these done
clear
E)
None of these done
clear
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question_answer24)
Find the greatest number which divide 2808 and 2880 completely.
A)
36 done
clear
B)
52 done
clear
C)
66 done
clear
D)
72 done
clear
E)
None of these done
clear
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question_answer25)
What least number should be added to 153364 such that the sum become a multiple of 28?
A)
8 done
clear
B)
12 done
clear
C)
16 done
clear
D)
20 done
clear
E)
None of these done
clear
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question_answer26)
To find a multiple of 7546, by which one of the following numbers should 7546 be multiplied?
A)
574 done
clear
B)
643 done
clear
C)
335 done
clear
D)
All of these done
clear
E)
None of these done
clear
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question_answer27)
C is the product of A and B. Which one of the following is not true?
A)
A is a factor of C done
clear
B)
B is a factor of C done
clear
C)
C is a common multiple of both A and B done
clear
D)
A is a common factor of B and C done
clear
E)
None of these done
clear
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question_answer28)
What least number should be subtracted from 2600 such that the difference becomes divisible by 24, 30, 36, and 42?
A)
20 done
clear
B)
40 done
clear
C)
60 done
clear
D)
80 done
clear
E)
None of these done
clear
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question_answer29)
X is a multiple of 9. If X is greater than 22914 and smaller than 22930. Find the value of X.
A)
22915 done
clear
B)
22923 done
clear
C)
22927 done
clear
D)
22929 done
clear
E)
None of these done
clear
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question_answer30)
Two wires of 60 m and 72 m long are to be cut into small pieces such that each piece of both the wires is equal in length. Find the maximum possible length of a piece the wire could be cut off.
A)
6 m done
clear
B)
8 m done
clear
C)
10 m done
clear
D)
12 m done
clear
E)
None of these done
clear
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question_answer31)
What are the prime factor of 51?
A)
17 and 3 done
clear
B)
17 and 2 done
clear
C)
16 and 6 done
clear
D)
25 and 2 done
clear
E)
None of these done
clear
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question_answer32)
Write 69 as the product of two or more primes.
A)
\[23\times 3\] done
clear
B)
\[23\times 6\] done
clear
C)
\[27\times 5\] done
clear
D)
\[21\times 5\] done
clear
E)
None of these done
clear
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question_answer33)
Find the distinct prime factors of 144.
A)
2 and 3 done
clear
B)
2 and 5 done
clear
C)
3 and 5 done
clear
D)
5 and 7 done
clear
E)
None of these done
clear
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question_answer34)
Which two numbers are factors of 44?
A)
11 and 4 done
clear
B)
11 and 3 done
clear
C)
11 and 5 done
clear
D)
12 and 3 done
clear
E)
None of these done
clear
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question_answer35)
Which number is a factor of 9?
A)
2 done
clear
B)
3 done
clear
C)
4 done
clear
D)
5 done
clear
E)
None of these done
clear
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question_answer36)
Which number is a multiple of 7?
A)
62 done
clear
B)
24 done
clear
C)
45 done
clear
D)
49 done
clear
E)
None of these done
clear
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question_answer37)
Which number is a multiple of 6?
A)
32 done
clear
B)
45 done
clear
C)
24 done
clear
D)
20 done
clear
E)
None of these done
clear
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question_answer38)
What are the first two multiples of 12?
A)
12 and 24 done
clear
B)
12 and 26 done
clear
C)
12 and 40 done
clear
D)
12 and 36 done
clear
E)
None of these done
clear
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question_answer39)
Find all the factors of 18?
A)
1, 2, 3, 6, 9, 18 done
clear
B)
1, 2, 4, 5, 8 done
clear
C)
1, 8, 9, 7, 18 done
clear
D)
1, 8, 5, 16 done
clear
E)
None of these done
clear
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question_answer40)
What is the name of the term which completely divides the other number?
A)
Factor done
clear
B)
Decimal done
clear
C)
Multiple done
clear
D)
All of these done
clear
E)
None of these done
clear
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