Statisticsmedium · Past Paper
A number is chosen from 1 to 20. What is the probability that it is a prime number?
A7/20
B8/20
C9/20
D1/2
✓ Correct Answer: B — 8/20
Prime numbers between 1 and 20: 2, 3, 5, 7, 11, 13, 17, 19 (total 8). 8/20 = 2/5.
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