Hello Mani,

The correct answer is 120.

If you divide 120 by 1,2,3,4,5,6 it is completely divisible but if you divide 120 by 7 the remainder will be 1.

These types of problems can be solved easily by the concept of LCM.

60 is the LCM of 1,2,3,4,5,6 but if divided by 7 remainder will be 4.

After 60, 120 will be the no. Which will be divisible by 1,2,3,4,5,6.

Hope you understand this now.