Math, asked by sumanvijay987, 10 months ago

what is the sum first 15 multiple of 8

Answers

Answered by vishal6712

2

15×64= 960

Step-by-step explanation:

put n=15,a=8,l=120 in formula ofSn

Answered by Anonymous2k04

3

d=8

a=8

n=15

S15=15/2(2*8+(15-1)8)

=15/2(16+14*8)

=15/2(16+112)

=15/2(128)

=15*64

=960

The answer is 960

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