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2-Digit Number is Multiple of 14

Date: 9/10/96 at 17:40:9
From: Anonymous
Subject: Probability that Multiple of 14...

What is the probability that a randomly selected two-digit number is a
multiple of 14?

Date: 9/10/96 at 18:30:31
From: Doctor Tom
Subject: Re: Probability that Multiple of 14...

Well, the list of possible 2-digit numbers includes:

   10, 11, 12, ..., 99

There are 90 of these.

The multiples of 14 in this range include:

   14, 28, 42, 56, 70, 84, 98

There are 7 of these.

So there are 7 "successes" out of 90 possibilities, so the
probability is 7/90.

-Doctor Tom,  The Math Forum
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Associated Topics:
High School Probability

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