Question

In an A. P. the sum of first 10 terms is -150 and the sum of its next 10 terms is -550. Find the A. P

Answer 1

Answer:

A.P=3,-1,-5,-9,-13,-17,-21,-24,...........{7-4n}

Step-by-step explanation:

by using formula

An= a+(n-1)d

An=3+(n-1)(-4)

An=3+(-4n+4)

An=(7-4n) answer