Math, asked by km6228824, 6 months ago

find the sum of the first 15 multiples of 8 for class 10 th

Answers

Answered by Nibeditaraut

5

Answer:

The multiples of 8 are 8,16,24,32…

These are in an A.P., having first term as 8 and common difference as 8.

Therefore, a=8,d=8, S

15

Sn=2n

[2a+(n−1)d]

S15=215

[2(8)+(15−1)8]=215

[16+(14)(8)]= 215×128

=960

Answered by ItzPsychoElegant

1

Step-by-step explanation:

hope it's help full for u

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