Question
Construct the composition table for $\times _4$ on set $S = \{0, 1, 2, 3\}.$

Answer

Here,
$1\times _41 =$ Remainder obtained by dividing $1 \times 1$ by $4 = 1$
$0\times _41 =$ Remainder obtained by dividing $0 \times 1$ by $4 = 0$
$2\times _43 =$ Remainder obtained by dividing $2 \times 3$ by $4 = 2$
$3\times _43 =$ Remainder obtained by dividing $3 \times 3$ by $4 = 1$
Therefore,
The composition table is as follows:
$x_4$ $0$ $1$ $2$ $3$
$0$ $0$ $0$ $0$ $0$
$1$ $0$ $1$ $2$ $3$
$2$ $0$ $2$ $0$ $2$
$3$ $0$ $3$ $2$ $1$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free