Question

The first term and last term of an AP 2and 205 receptively if there are 30 terms in an AP find the common difference

Answer 1

Answer:

Given, a= 2 ; l= 205 and n= 30

Step-by-step explanation:

therefore, from formula

> l = a+ (n-1)d

=> 205= 2+(30-1)d

=> 205=2+29d

> 205-2= 29d

=> 203= 29d

=> 203/29= d

=> 7 = d

i.e. The common difference (d) is 7