Bank Exam Government Jobs Exams

What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ?

A. 196
B. 630
C. 1260
D. 2520

Read Solution (Total 2)

ANSWER : 630

SOLUTION :

LCM of 12,18,21 and 30 is 1260
So required number is 1260/2 = 630
13 years agoHelpfull: Yes(18) No(4)

hcf=7x5x3x3x2x2=1260
so the no is 1260/2=630
ans B
13 years agoHelpfull: Yes(9) No(5)

Bank Exam Other Question

The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:

A. 1
B. 2
C. 3
D. 4
The sum of the digits of a two-digit number is 15 and the difference between the digits is 3. What is the two-digit number?

A.
69
B.
78
C.
96
D.
Cannot be determined
E.
None of these