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 L.C.M. of 22, 54, 108, 135 and 198 is :









2)

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









3)

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









4)

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 :









5)

Product, of two co-prime numbers is 117. Their L.C.M. should be :









6)

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 :









7)

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.









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 a 1073. The sum of the three numbers is :









9)

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









10)

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 :









11)

A number a is said to be perfect if the sum of all its divisors (excluding n itself) is equal to n. An example of perfect number is :









12)

Which of the following has most number of divisors ?









13)

The maximum number of students among them 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is :









14)

The least number of five digits which is exactly divisible by 12, 15 and 18, is :









15)

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