Question

Find the first negative term of ap 120, 117, 114

Answer 1

HELLO DEAR,
.


121,117,113......

a=121.         d=-4

For a(n) be negative

a(n)<0

a+(n-1)d <0

121+(n-1)*(4)<0

For ans be negative

(n-1)(-4)>121

4n >(125)

n >125/4

n >31.25

n=32

the 31st term is the negative term


a(n)=a+(n-1)d

a(n)=121+(32-1)-4

a(n)=121+31*-4

a(n)=121-124

a (n)=-3

I HOPE ITS HELP YOU DEAR,
THANKS