The relation ‘is factor of’ on the set of natural numbers is not
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Step-by-step explanation:
A relation is said to be symmetric if an element a is related to b then b is also related to a.
Suppose factor of a number say 10=1,2,5,10
We can notice that factors of 10 are all these numbers, but the reverse is not true for each factor. That is 10 is not a factor of 1 or 2 or 5.
So, this relation is not symmetric.
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