Question

list all prime and composite numbers between 20 and 40

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Answer 1

Answer:

The number 39 is divisible by 3, so it is a composite number. The number 40 is divisible by 2, so it is a composite number. So, we have the list of composite numbers between 20 and 40 as 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39 and 40. Note: We must notice that all even numbers are divisible by 2.

Answer 2

Answer:

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A composite number is any number which has factors apart from 1 and itself. The only prime numbers (having no factors apart from 1 and themselves) between 20 and 40 are: 23,29,31,37 .