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Online Arithmetic aptitude Test ( HCF and LCM )


Question 1 :

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

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

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.

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

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

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

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

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

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 6 :

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)
Question 7 :

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 8 :

Which of the following has most number of divisors ?

a) b)
c) d)
e) f)
Question 9 :

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

a) b)
c) d)
e) f)
Question 10 :

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

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

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)
Question 12 :

Four different electronic devices make a beep after every 30 minutes, 1 hour, 1.5 hour
and 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will again beep together at :

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

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 14 :

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 15 :

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)