Question

if sum of AP is 37 and 15 term is more 15 more than the 12 times find the AP and find sum of first 15 terms of AP

Answer 1

"if the sum of AP is 37 and 15 term is more 15 more than the 12 times find the AP and find the sum of first 15 terms of AP

Ans :  

For any Arithmetic Progression, the nth term can be written as (a + (n-1)d), where 'a' = first term, 'd' = Common difference between two terms, and 'n' = number of terms.

e.g. 3rd term = a+2d, 1st term = a + 0d = a

The amount of the fourth and twelfth term of an arithmetic progression is 20.

4th Term + 12th Term = 20 ----------> (a+3d) + (a+11d) = 20 ----------> 2a + 14d = 20"