Question

which term of the AP 134 129 144 is its first negative term​

Answer 1

Answer:

28th term is first negative

Step-by-step explanation:

AP 134 129 124 ................

a=134,d=129-134=-5

let nth  term=0

0=134+(n-1)*(-5)

5(n-1)=134

n-1-=134/5=26.8

n=1+26.8=27.8

n=27.8

hence no term is equal to zero

But term next 27 or 28th term is first negative

Test

a28=134+27(-5)

=134-135=-1 which is negative