Question

Find the sum of 15 terms of ap 5, 8, 11, 14 full sum maduvudu hege antha tell and give

Answer 1

heya here is ur answer =

a=5

d=3

s15=n/2[2a+(n-1)d]

=15/2[10+14×3]

=15/2[10+42]

=15/2 ×52

=15×26=390.

hope it helps.

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