Question

Find the sea of first 24 no. Of an Ap: 5,8,11,14......

Answer 1

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Answer 2

We have
Ap=5,8,11,14......
So that,
a=5
d = 3
n=24
So,
Sum of n terms = n/2{2a+(n-1)d}
=24/2{2×5+23×3}
=948