MCQ
For each $n \in N$, then $3^{2 n+1}+1$ is divisible by:
- ✓2
- B3
- C7
- DNone of these
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$6,10,7,13, a, 12, b, 12$ are 9 and $\frac{37}{4}$ respectively, then $(a-b)^{2}$ is equal to: