Explore topic-wise MCQs in Aptitude.

This section includes 32 Mcqs, each offering curated multiple-choice questions to sharpen your Aptitude knowledge and support exam preparation. Choose a topic below to get started.

1.

The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is:

A. 28
B. 32
C. 40
D. 64
Answer» D. 64
Discussion
2.

The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:

A. 504
B. 536
C. 544
D. 548
Answer» E.
Discussion
3.

252 can be expressed as a product of primes as:

A. 2 x 2 x 3 x 3 x 7
B. 2 x 2 x 2 x 3 x 7
C. 3 x 3 x 3 x 3 x 7
D. 2 x 3 x 3 x 3 x 7
Answer» B. 2 x 2 x 2 x 3 x 7
Discussion
4.

The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is:

A. 28
B. 32
C. 40
D. 64
Answer» D. 64
Discussion
5.

The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:

A. 504
B. 536
C. 544
D. 548
Answer» E.
Discussion
6.

252 can be expressed as a product of primes as:

A. 2 x 2 x 3 x 3 x 7
B. 2 x 2 x 2 x 3 x 7
C. 3 x 3 x 3 x 3 x 7
D. 2 x 3 x 3 x 3 x 7
Answer» B. 2 x 2 x 2 x 3 x 7
Discussion
7.

The greatest possible length which can be used to measure exactly the lengths 7 m, 3 m 85 cm, 12 m 95 cm is:

A. 15 cm
B. 25 cm
C. 35 cm
D. 42 cm
Answer» D. 42 cm
Discussion
8.

Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:

A. 75
B. 81
C. 85
D. 89
Answer» D. 89
Discussion
9.

Find the highest common factor of 36 and 84.

A. 4
B. 6
C. 12
D. 18
Answer» D. 18
Discussion
10.

Which of the following has the most number of divisors?
A. 99
B. 101
C. 176
D. 182
Answer» D. 182
Discussion
11.

The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:

A. 101
B. 107
C. 111
D. 185
Answer» D. 185
Discussion
12.

Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:

A. 40
B. 80
C. 120
D. 200
Answer» B. 80
Discussion
13.

The G.C.D. of 1.08, 0.36 and 0.9 is:

A. 0.03
B. 0.9
C. 0.18
D. 0.108
Answer» D. 0.108
Discussion
14.

The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is:

A. 279
B. 283
C. 308
D. 318
Answer» D. 318
Discussion
15.

The ratio of two numbers is 3 : 4 and their H.C.F. is 4. Their L.C.M. is:

A. 12
B. 16
C. 24
D. 48
Answer» E.
Discussion
16.

The smallest number which when diminished by 7, is divisible 12, 16, 18, 21 and 28 is:

A. 1008
B. 1015
C. 1022
D. 1032
Answer» C. 1022
Discussion
17.

252 can be expressed as a product of primes as:

A. 2 x 2 x 3 x 3 x 7
B. 2 x 2 x 2 x 3 x 7
C. 3 x 3 x 3 x 3 x 7
D. 2 x 3 x 3 x 3 x 7
Answer» B. 2 x 2 x 2 x 3 x 7
Discussion
18.

Find the lowest common multiple of 24, 36 and 40.

A. 120
B. 240
C. 360
D. 480
Answer» D. 480
Discussion
19.

The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:

A. 3
B. 13
C. 23
D. 33
Answer» D. 33
Discussion
20.

A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ?

A. 26 minutes and 18 seconds
B. 42 minutes and 36 seconds
C. 45 minutes
D. 46 minutes and 12 seconds
Answer» E.
Discussion
21.

The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is:

A. 28
B. 32
C. 40
D. 64
Answer» D. 64
Discussion
22.

The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:

A. 504
B. 536
C. 544
D. 548
Answer» E.
Discussion
23.

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?

A. 4
B. 10
C. 15
D. 16
Answer» E.
Discussion
24.

The H.C.F. of two numbers is 23 and the other two factors of their L.C.M. are 13 and 14. The larger of the two numbers is:

A. 276
B. 299
C. 322
D. 345
Answer» D. 345
Discussion
25.

The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:

A. 9000
B. 9400
C. 9600
D. 9800
Answer» D. 9800
Discussion
26.

The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is:

A. 74
B. 94
C. 184
D. 364
Answer» E.
Discussion
27.

The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is:

A. 123
B. 127
C. 235
D. 305
Answer» C. 235
Discussion
28.

Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.

A. 4
B. 7
C. 9
D. 13
Answer» B. 7
Discussion
29.

Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is:

A. 4
B. 5
C. 6
D. 8
Answer» B. 5
Discussion
30.

The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
31.

What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ?

A. 196
B. 630
C. 1260
D. 2520
Answer» C. 1260
Discussion
32.

The least number which when divided by 5, 6 , 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is:

A. 1677
B. 1683
C. 2523
D. 3363
Answer» C. 2523
Discussion