Today I did some revision on Prime and Composite numbers.
Prime means it only has to factors itself and 1.
Composite means it has more then two factors.
For example 4: 4 1 2 ( four has three factors which then means it is composite.
14:7 2 14 1 ( composite)
7: 7 1( seven only has two factors(itself and one)which means it must be prime)
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