Question

7^n divide (49)! then n=​

Answer 1

Step-by-step explanation:

There are octal strings of length . of them have at most one nonzero digit. The rest can be divided into equal groups based on their first two nonzero digits.

By the Binomial Theorem, . All but the first 2 of these terms are divisible by . And the first two terms are . Thus, divides .

There are 8n octal strings of length n . 7n+1 of them have at most one nonzero digit. The rest can be divided into 49 equal groups based on their first two nonzero digits.

ans=7

7^n divide (49)! then n=7