# Doubt from permutation and combination

YES Sir please solve this problem.

Yes it is the correct answer what was your approach . Share it.

Actual solution is merely of 3 lines , here i have just explained each step with example for clear understanding

Can you pls explain the process where you calculated the product of divisors of N

I have solved in details for understanding...it can be solved without showing the actual terms and thus it get shortened.

@ujwal_2020 for example a number is 2²5³7² then to get the number of divisors of it , we do the following

Any divisor of this number will have ether

No 2 or one 2 or two 2 so for selecting 2 there are 3 options

Then we have

No 5 or one 5 or two 5 or three 5 so we have 4 options

Similarly for 7 we have 3 options

So total number of divisors = 3*3*4 = 36

Similarly you can get the number of divisors of K in the above solution