Mathematics for IGCSE & O level - The Four Operations (Section 6 - No. 38)

Which of the following sets of numbers are prime?

2, 3, 5, 7

4, 6, 8, 10

11, 13, 17, 19

1, 2, 3, 4

Forklaring

Prime numbers are divisible only by 1 and themselves.

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