Question

Find the sum of 1st 11 positive Numbers which are multiple of 6.
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Answer 1

Answer:

12+18+24+30+36+42

162

please mark as brainlest answer

Answer 2

Answer:

first 11 multiple of 6

6, 12, 18, 24, 30, 36 ,42 , 48, 54, 60, 66

common difference=6

a1=6

a11=66

n=11

Sn=n/2(a+an)

S11=11/2(6+66)

=11/2(72)

=11(36)

S11=396