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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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