Math, asked by amie22, 6 months ago

Lesson :Arthematic
Progression

Class:10

1. Find the sum of 1st 15terms of the AP 102, 107, 112,............997

plz no irrelevant answers​

Answers

Answered by vpoojitha
1

Step-by-step explanation:

sum of first 15 terms= 15/2 +(2×102+ (15-1)×5)

= 15/2(204 + 70)

= 15/2(274)

= 15× 137

= 2055

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