Problem Solving (PS) | Re: If a sequence is given by the expression and S_n = S_{n-1} + 3, what

Let the first term of the sequence be x.
Second term will be x+3, third term is x+3+3

So, the sum will be of form
30x + 3 + 6 + 9 + ....... 42 + 45 + 48 + ...... + 87
= 30x + 90*14 + 45
= 30x + 1305

If x = 1, the sum is 1335(Option A)

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