Question

if the 7th term of an ap is 91 and the 9th term is 71 find 63rd term

PLEASE ANSWER FAST ​

Answer 1

Answer:

63rd term is -469

Step-by-step explanation:

We know in an AP nth term is given by

t = a+(n-1) d

91=a +6d..... 1

71= a+8d..... 2

solving equation 1 and 2

we get d = -10 and a= 151

so 63rd term=a+62d

t=151+62(-10)

t= -469

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