The first term of an ap is -2 and the10th term is 16. find its 15th term

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asked Dec 6, 2019 56.0k views

3 votes

The first term of an ap is -2 and the10th term is 16. find its 15th term

Mathematics
middle-school

Kuyabiye asked

by Kuyabiye

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1 Answer

7 votes

First find the common difference :-

10th term - fist term = 9 * common difference

9d = 16-(-2)
9d = 18
d = 2

so the 15th term
= a1 + 14d
= -2 + 14*2 = 26 (answer)

Britzl answered Dec 11, 2019

by Britzl

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