Question

find the sum of the first 14 terms of an A.P 3, 15, 27, 39,.........​

Answer 1

Answer:

497

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Step-by-step explanation:

Answer 2

Answer:

1047

Step-by-step explanation:

3+15+27+39+51+63+75+87+99+111+123+135+147+159 = 1047