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Online Arithmetic aptitude Test ( HCF and LCM )

Online test contains 15 questions from the category which you chosen. Read the questions carefully and check the options and sumbit the test. After submitting, your test will be processed and results will be displayed.

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

a) b)
c) d)
e) f)

Let the least number of six digits, which when divided by 4, 6, 10 and 15 leaves in each case the same remainder of 2, be N. The sum of the digits in N is :

a) b)
c) d)
e) f)

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

a) b)
c) d)
e) f)

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) b)
c) d)
e) f)

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) b)
c) d)
e) f)

252 can be expressed as a product of primes as ;

a) b)
c) d)
e) f)

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

a) b)
c) d)
e) f)

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

a) b)
c) d)
e) f)

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 :

a) b)
c) d)
e) f)

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 :

a) b)
c) d)
e) f)

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 ?

a) b)
c) d)
e) f)

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

a) b)
c) d)
e) f)

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

a) b)
c) d)
e) f)

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 :

a) b)
c) d)
e) f)

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

a) b)
c) d)
e) f)