Question

the 9th term of an AP is 449 and 449th term is 9 then the term which is equals to zero is​

Answer 1

Answer:

457th term

Step-by-step explanation:

here a+8d=449. (1)

& a+448d=9. (2)

and a+nd=0. (3)

so subtract equation 2 from 1 then we get

d=-1

then put the value of d in equation 1 we get value of a=457

then a+nd =0

then n =457

Answer 2

The term which is equal to zero is 458th term.

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