A composition table consists of elements which are a result of operation on the set elements.
Here we have the operation, a x6 b = remainder of ab divided by 6 where a, b ∈ S.
This is the composition table of x4 on S = {0, 1, 2, 3, 4, 5}
For example, take 3 x6 2 = remainder of (3 x 2) divided by 6
Remainder of \(\frac{6}{6} = 0\)