4, 6, 8, 9, 10, 12, 14, 15
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The set of counting numbers greater than one.
90, 91, 92, 93, 94, 95, 96That's the only set of seven consecutive composite numbers less than 100.
The set of composite numbers includes all whole numbers greater than 1 that are not prime numbers. The first few composite numbers are 2, 4, 6, 8, 11, 13, etc.
The set of natural numbers less than four is {1, 2, 3}.
The set of all composite numbers is infinite. There's not really enough room to list them here.