Question

please answer this question ​

Answer 1

Answer:

take out 4 and do the following steps

4+4+.....n times-(1/n+2/n+....... n/n)

4n-1/n(1+2+3.....n)

4n-1/n x n(n+1) /2 {sum of first n natural numbers}

4n-(n+1) /2

(7n-1)/2 is the answer

Answer 2

Answer:

By the app konsa class ma ho ???

and are u from ??