If the nth term of an arithmetic progression is `3n+7,` then what is the sum of its first 50 terms ?

If the nth term of an arithmetic progression is 2n-1 , then what is the sum upto n terms?

The sum of the fourth and twelfth term of an arithmetic progression is 20. What is the sum of the first 15 terms of the arithmetic progression?

The sum of the fourth and twelfth term of an arithmetic progression is 20. What is the sum of the first 15 terms of the arithmetic progression?

The nth term of an arithmetic progression is 3n-1. Find the progression.

Suppose the sum of the first m teams of a arithmetic progression is n and the sum of its first n terms is m, where mnen. Then the dum of the first (m + n) terms of the arithmetic progression is

If the sum of 'n' terms of an arithmetic progression is n^(2)-2n , then what is the n^(th) term?

The sum of the first three terms of the arithmetic progression is 30 and the sum of the squares of the first term and the second term of the same progression is 116. Find the seventh term of the progression if its fith term is known to be exactly divisible by 14.