Question

if 3rd term and 9th term of A.P 4 and -8 respectively which term of A.P is 0​

Answer 1

Answer:

a+2d=4

a+8d=-8

subtracting both the equation we get

-6d=4

=>d=-2/3

now

a+2×(-2/3)=4

a=16/3

now

0=a+(n-1)d

0=16/3+(n-1)×(-2/3)

n-1=8

=>n=9. ans.

Step-by-step explanation:

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