Yes, all even numbers are composite numbers because you can multiply half of it by 2.
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96 is a composite number because it has more than two factors. 96 is divisible by 2, 4, 1, 96 etc. which clearly shows that it has more than two factors.In order to show that a number is composite there is no need to find its all factors, we have to show only that it has more than two factors.
96 is composite. 96 =2*48 = 2*2*24 = 2*2*2*12 = 2*2*2*2*6 = 2*2*2*2*2*3 = 2^5*3 A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
There are 10 composite numbers from 90 to 100 (including the boundaries):90, 91, 92, 93, 94, 95, 96, 98, 99 and 100
All but 97
The numbers 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99 and 100 are composite (including the boundaries).