Which one of the following sets contains all the prime numbers between

1.	Which one of the following sets contains all the prime numbers between 1 to 20?
A.	{1, 2, 3, 5, 7, 9, 11, 17, 19}
B.	{2, 3, 5, 7, 11, 13, 17, 19}
C.	{2, 5, 7, 9, 11, 13, 17, 19}
D.	{3, 5, 7, 9, 11, 13, 17, 19}
E.	None of these
Answer» C. {2, 5, 7, 9, 11, 13, 17, 19}

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Which one of the following sets contains all the prime numbers between 1 to 20?

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