Maths Mcqs Practice Test

Question 1

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___________?

Accepted Answer

C. 322

Question 2

The H.C.F of two numbers is 8. Which of the following can never be their L.C.M?

Accepted Answer

D. 60

Question 3

Product of two co-prime numbers is 117. Their L.C.M should be__________?

Accepted Answer

B. 117

Question 4

If the sum of two numbers is 55 and the H.C.F and L.C.M of these numbers are 5 and 120 respectively, then the sum of the reciprocal of the numbers is equal to___________?

Accepted Answer

C. 11/120

Question 5

The L.C.M of two numbers is 495 and their H.C.F is 5. If the sum of the numbers is 10, then their difference is__________?

Accepted Answer

A. 10

Question 6

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__________?

Accepted Answer

C. 308

Question 7

The H.C.F and L.C.M of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1:4, then the larger of the two numbers is____________?

Accepted Answer

C. 84

Question 8

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

Accepted Answer

A. 40

Question 9

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

Accepted Answer

C. 40

Question 10

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________?

Accepted Answer

C. 85

Question 11

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

Accepted Answer

B. 2

Question 12

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

Accepted Answer

C. 111

Question 13

The sum of two numbers is 528 and their H.C.F is 33. The number of pairs of numbers satisfying the above conditions is__________?

Accepted Answer

A. 4

Question 14

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

Accepted Answer

D. 48

Question 15

Three numbers are in the ratio 1:2:3 and their H.C.F is 12. The numbers are__________?

Accepted Answer

D. 12, 24, 36

Question 16

H.C.F of 3240, 3600 and a third number is 36 and their L.C.M is 24* 35* 52* 72. The third number is___________?

Accepted Answer

A. 22* 35* 72

Question 17

The G.C.D of 1.08, 0.36 and 0.9 is________?

Accepted Answer

C. 0.18

Question 18

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

Accepted Answer

C. 360

Question 19

Find the highest common factor of 36 and 84.

Accepted Answer

C. 12

Question 20

H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is___________?

Accepted Answer

A. 180