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  3. Three hundred multiples of three are picked at random, and three hundred multipl

Three hundred multiples of three are picked at random, and three hundred multipl

游客2024-01-13  56
问题 Three hundred multiples of three are picked at random, and three hundred multiples of four are picked at random. Approximately what percentage of the six hundred selected numbers are even?
选项 A、100%
B、75%
C、66%
D、50%
E、33%
答案 B
解析 All multiples of four are even, and half of the multiples of three are even; since they each make up 50% of the 600, the combined percentage is approximately 75%.
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