Online practise test contains 15 random questions. Read the questions carefully and check the relevant options. After submitting, your test will be processed and results will be displayed.



1)

The H.C.F. of 2/3. 8/9. 64/81 and 10/27 is :









2)

The H.C.F. of 3666 and 3444 is :









3)

Find the least number which when divided by 16, 18; 20 and 25 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder.









4)

The L.C.M. of two numbers is 45 times their H C.K. If one of the numbers is 125 and the sum of H.C.F. and L.C.M. is 1150, the other number is :









5)

H.C.F. of 4 x 27 x 3125, 8 x y x 25 x 7 & 16 x 81 x 5 x 11 x 49 is :









6)

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 :









7)

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 ?









8)

The H.C.F. and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125, then that number is :









9)

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 :









10)

The H.C.F. of 204, 1190 and 1445 is :









11)

A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 2.ri2 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting noint ?









12)

252 can be expressed as a product of primes as ;









13)

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









14)

The least rubber which is a perfect square and is divisible bv each of the numbers Jo, 20 and 24, is :









15)

Which of the following is a pair of co-primes ?