MCQ
The number of commutative binary operation that can be defined on a set of $2$ elements is:
- A$8$
- B$6$
- C$4$
- ✓$2$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| $X = x_i$ | $0$ | $1$ | $2$ | $3$ |
| $P(X = X_i)$ | $k$ | $3k$ | $3k$ | $k$ |