Hindi, asked by muskaan2005shaikh, 3 months ago

the first term of a AP is -3 and the 10term is 15 find S10

Answers

Answered by darshan8021

0

Answer:

a is equal to -3

a+9d us equal to 15

then d is equal to -1/2

S10=a+(n*d)

Explanation:

use this formula n substitute

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