What Is The Probability Of Picking A 3 Digit Number Divisible By 7

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To determine the probability of picking a three-digit number divisible by 7, first calculate the total number of three-digit integers, which ranges from 100 to 999, totaling 900 possibilities. Next, identify how many of these numbers are divisible by 7; this can be done by dividing the range's endpoints by 7. For example, from 1 to 70, there are 10 numbers divisible by 7, illustrating the method. Finally, calculate the percentage of three-digit numbers that are divisible by 7 to find the probability. This approach provides a clear framework for solving the problem.
mathelord
What Is The Probability Of Picking A 3 Digit Number Divisible By 7
 
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I'd start by thinking how many possibilities there are, so how many 3 digit integers (whole numbers) are there?

Then i'd consider how many numbers in this range are divisable by 7, a simpler example which may help you get started would be how many numbers from 1 to 70 are divisable by 7 the answer is just 70/7 = 10.

Once you've found out how many numbers between the range are divisable by 7, find out what percentage is this amount to the original range?

I hope this helps (and i hope it's right :-p )
 

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