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| Math Central | Quandaries & Queries |
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Question from katelyn, a student: Hi I have a question about probability. How many 3 digit numbers can be created if each number is a multiple of 10? |
Katelyn,
An integer is a multiple of 10 precisely if its units digit is 0. Thus every three digit that is a multiple of 10 is of the form
(a 2 digit number)
10
How many 2 digit numbers are there?
Penny
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