Math, asked by anaswara23, 10 months ago

how many terms of an ap 18 ,16,14 .... be

Answers

Answered by shivanissm81

4

Answer:

an=a+(n-1)d

d=16-18

d=-2

an=18+(n-1)-2

18-2n+2

20-2n

2n=20

n=10

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