Mathematics
Marissaa14
4

A box contains twenty cards numbered 1 through 20. One card is to randomly drawn from the box. What is the probability that the card drawn will show a multiple of 4, a multiple of 7, or a multiple of 9? A. 9/20 B. 1/3 C. 3/20 D. 1/20

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(1) Answers
ShelbsNCheese

Sample space = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}; The cards with numbers which are multiple of 4 = 5; The cards with numbers which are multiple of 7 = 2; The cards with numbers which are multiple of 9 = 2; The probability that the card drawn will show a multiple of 4, a multiple of 7, or a multiple of 9 = 5/20 + 2/20 + 2/20 = 9/20;

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