Question

if the sum of first 3 terms of an AP is 3 then find its first term=​

Answer 1

Answer:

let common difference be 1

numbers in AP. can be a-1 , a , a+1

here first term is a-1

the sum of first 3 terms is 3

ATQ

a - 1 + a + a +1 = 3

3a = 3

a = 1

so the first term is 1 -1 = 0