Answer:
Given
a *? b = H.C.F. of a and
Required
operation table of the operation *? is given below.
Clearly this
composition table is same as given in question 4.
*?
1
2
3
4
5
1
1
1
1
1
1
2
1
2
1
2
1
3
1
1
3
1
1
4
1
2
1
4
1
5
1
1
1
1
5
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