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If the sum of first $n$ terms of an A.P. is given by $S_n = \frac{n}{2}(3n + 1)$, then the first term of the A.P. is
- (a)$2$
- (b)$\frac{3}{2}$
- (c)$4$
- (d)$\frac{5}{2}$
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Ans: (A) $2$
If the sum of first n terms of an A.P. is given by S_n = n/2(3n + 1) , then the first term of the A.P. is
CBSE Class 10 Maths PYQ · Arithmetic Progressions · Sum Formula · 1 Mark · March 2025 · Basic
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