Math, asked by lalittak92522, 10 months ago

Q2. Find the sum of first 15terms of an A.P. whose 5th and 9th terms are 26 and 42
respectively

Answers

Answered by agrimgoyal004

0

Answer:

435

Step-by-step explanation:

a+4d=26

a+8d=42

4d=16

d=4

a=10

s=15/2(2+14*4)

s=435

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