Question

Numbers of term in an ap 2 -9 -20 .....-141

Answer 1

Answer:

14th term

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Answer 2

No. of terms=n

a=2

d=-9-2

=-11

an(last term)=-141

a+(n-1)d=-141

2+(n-1)-11=-141

(n-1)-11=-141-2

(n-1)=-143/-11

n-1=13

n=13+1

n=14

Therefore, no. of terms in this AP are 14