Question

the nth term of a sequence is 8-5n. show that the sequence is an AP

Answer 1

Deeparu Ambitious

Put n=1 in 8-5n

8-5=3

Put n=2

8-10=-2

Put n=3

8-15=-7

Now -7-(-2)=-2-3

-5=-5

Hence d ( common difference is same)

So the sequence given is in A. P.