Question

find whether -150 is term of the ap 17 12 7 2 ....?
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Answer 1

Answer:

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Answer 2

Answer:

17,12,7,2

a=17

d=-5

an=-150

an=a+(n-1)d

-150=17+(n-1)(-5)

-150=17-5n+5

-150=22-5n

5n=22+150

5n=172

n=172/5

n=34.4 terms

:. -150 is not the term of the ap 17,12,7,2...

Bcoz ap does not comes in decimal form.

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