4. (a) Write all the composite numbers below 20. How many are they? (b) Write all the composite numbers between 15 and 25. (C) Write the two smallest composite numbers whose difference is 4
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Step-by-step explanation:
(a) = The composite numbers from 1 to 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, and 20. They Are 11.
(b) = The Composite numbers between 15 and 25 are 16, 18, 20, 21, 22, 24, 25.
(c) = 7 or 11.
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