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question_answer1)
Which of the following statements is correct?
A)
Every prime number is odd. done
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B)
Every even number is composite. done
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C)
The sum of two odd numbers is always odd, done
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D)
The HCF of two given numbers is always a factor of their LCM done
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question_answer2)
Find the number of multiples of 5.
A)
100 done
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B)
600 done
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C)
700 done
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D)
infinite done
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question_answer3)
How many prime numbers are there "between 1 to 100"?
A)
25 done
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B)
24 done
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C)
30 done
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D)
60 done
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question_answer4)
Which of the following is a perfect square?
A)
28 done
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B)
26 done
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C)
25 done
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D)
2.4 done
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question_answer5)
What is the HCF of two prime numbers?
A)
2 done
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B)
1 done
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C)
40 done
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D)
None of these done
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question_answer6)
What is the LCM of 36, 75 and 80?
A)
3600 done
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B)
3500 done
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C)
3400 done
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D)
3000 done
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question_answer7)
Product of two numbers = ___________
A)
\[LCM\times ~HCF\] done
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B)
\[First\text{ }No.\times Second\text{ }No.\] done
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C)
\[1\] done
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D)
None of these done
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question_answer8)
The sum of the factors of 25 is
A)
7 done
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B)
6 done
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C)
31 done
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D)
26 done
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question_answer9)
A number is divisible by 24 if ___________
A)
It is divisible by 6 and 4 both done
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B)
It is divisible by 8 and 3 both done
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C)
It is divisible by 12 and 2 both done
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D)
All of these done
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question_answer10)
Prime factorization of\[512\times 343\]
A)
\[{{2}^{9}}\times {{7}^{3}}\] done
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B)
\[{{2}^{4}}\times {{3}^{2}}\] done
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C)
\[{{2}^{4}}\times {{3}^{2}}\] done
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D)
None of these done
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question_answer11)
Determine the number nearest to 100000 but greater than 100000 which is exactly divisible by each of 8, 15 and 21?
A)
100200 done
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B)
100800 done
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C)
240800 done
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D)
260040 done
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question_answer12)
Let a, b, c.................be factors of numbers 28. The value of \[\frac{1}{a}+\frac{1}{b}+\frac{1}{c}+.........\]is equal to
A)
\[\frac{13}{7}\] done
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B)
\[\frac{14}{7}\] done
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C)
\[a\frac{27}{13}\] done
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D)
None of these done
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question_answer13)
\[\frac{182}{195}\]when reduced to the lowest term is
A)
\[\frac{13}{15}\] done
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B)
\[\frac{14}{15}\] done
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C)
\[\frac{13}{14}\] done
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D)
\[\frac{12}{13}\] done
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question_answer14)
Which of the following pair is co-prime?
A)
81, 135 done
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B)
87, 116 done
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C)
43, 73 done
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D)
26, 65 done
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question_answer15)
Find the number of factors of 1024
A)
11 done
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B)
12 done
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C)
13 done
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D)
14 done
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question_answer16)
If the 8-digit number 136y5785 is divisible by 15, then find the least possible value of
A)
1 done
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B)
2 done
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C)
0 done
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D)
None of these done
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question_answer17)
Find the smallest number which when divided by 25, 40 and 60 leaves remainder 7 in each case?
A)
607 done
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B)
608 done
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C)
609 done
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D)
610 done
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question_answer18)
x, y, z, w are four odd natural numbers. Let\[u=\]\[{{x}^{2}}+{{y}^{2}}+{{z}^{2}}+{{w}^{2}}\]. Consider following statements
I. U is always divisible by 4 |
II. U is never divisible by 8 |
Which of the above statements) is /are true?
A)
Only I done
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B)
Only II done
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C)
Both I and II done
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D)
neither I nor II done
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question_answer19)
\[\frac{2211}{5025}\], which reduced to its simplest form. By dividing the numerator and denominator
A)
\[\frac{11}{25}\] done
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B)
\[\frac{23}{27}\] done
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C)
\[\frac{47}{49}\] done
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D)
\[\frac{37}{43}\] done
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question_answer20)
A boy saves Rs. 4.65 daily. Find the least number of days in which he will be to save an exact number (whole number) of rupees.
A)
24 done
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B)
20 done
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C)
30 done
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D)
40 done
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question_answer21)
H.C.F of two numbers is 16, then their LCM is
A)
162 done
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B)
167 done
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C)
192 done
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D)
197 done
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question_answer22)
It is given that 65610 is divisible by 27. Which two numbers nearest to 65610 are each divisible by 27?
A)
65583 and 65637 done
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B)
78424 and 74286 done
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C)
74053 and 732404 done
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D)
72854 and 65342 done
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question_answer23)
What is the HCF of \[4\times 27\times 3125,\text{ }8\times 9\times 25\times 7\]and\[16\times 81\times 5\times 11\times 49\]
A)
\[120\] done
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B)
\[180\] done
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C)
\[140\] done
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D)
\[170\] done
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question_answer24)
Three City buses leave the bus stop at 9.00 A.M. Bus A returns in every 30 minutes, Bus B returns in every 20 minutes and bus C returns in every 45 minutes. At what time all the buses will all return at the same time to the bus stop?
A)
1 : 00 PM done
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B)
12 : 00 Noon done
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C)
7 : 00 PM done
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D)
11 : 30 PM done
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question_answer25)
If the 4-digit number \[x27y\] is exactly divisible by 9, then the least value of \[(x+y)\]is
A)
1 done
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B)
3 done
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C)
4 done
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D)
9 done
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question_answer26)
What is the HCF of two consecutive numbers?
A)
3 done
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B)
1 done
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C)
4 done
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D)
2 done
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question_answer27)
Find the least number which when divided by 5, 7and 8 leaves 3 as the remainder in each case.
A)
283 done
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B)
78 done
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C)
578 done
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D)
57 done
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question_answer28)
What is the least integer by which 4500 should be multiplied so that it becomes a perfect cube?
A)
6 done
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B)
36 done
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C)
2 done
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D)
3 done
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question_answer29)
M and N are two co-primes. Which of the following is / are true?
A)
\[LCM(M,\,\,N)=M\times N\] done
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B)
\[HCF(M,\,\,N)=1\] done
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C)
Both (A) and (B) done
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D)
Neither (A) nor (B) done
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question_answer30)
Which of the following series is in descending order?
A)
\[\frac{1}{3},\frac{2}{3},\frac{3}{5},\frac{1}{3}\] done
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B)
\[\frac{2}{3},\frac{3}{5},\frac{3}{8},\frac{1}{3}\] done
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C)
\[\frac{1}{3},\frac{3}{8},\frac{3}{5},\frac{2}{3}\] done
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D)
\[\frac{2}{3},\frac{1}{3},\frac{3}{8},\frac{3}{5}\] done
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