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Online Arithmetic aptitude Test ( HCF and LCM )


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 :

a) b)
c) d)
e) f)
Question 2 :

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 :

a) b)
c) d)
e) f)
Question 3 :

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 :

a) b)
c) d)
e) f)
Question 4 :

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

a) b)
c) d)
e) f)
Question 5 :

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)
Question 6 :

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 :

a) b)
c) d)
e) f)
Question 7 :

252 can be expressed as a product of primes as :

a) b)
c) d)
e) f)
Question 8 :

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)
Question 9 :

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)
Question 10 :

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

a) b)
c) d)
e) f)
Question 11 :

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

a) b)
c) d)
e) f)
Question 12 :

The H.C.F. of 1.75, 5.6 and 7 is :

a) b)
c) d)
e) f)
Question 13 :

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

a) b)
c) d)
e) f)
Question 14 :

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

a) b)
c) d)
e) f)
Question 15 :

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)