# probability

posted by on .

If you pick a number completely at random from the natural numbers between 1 and 42, find the probability that the number is a multiple of 3.

• probability - ,

lets see: 3,6,9,12,15,looks like every third number. So 2/3 of them are not multilples, 1/3 is

Pr= 1/3

• probability - ,

the prob. will be 1/3.
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