- A3/10
- B1/3
- C7/20
- D1/4
Step-by-Step Solution
Multiples of 3 up to 20 are 3, 6, 9, 12, 15, 18 — 6 cards out of 20. Probability = 6/20 = 3/10.
Answer: A) 3/10
Twenty cards are numbered 1 to 20. One card is picked at random. What is the probability that its number is a multiple of 3?
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