##### Need math help: what is the probability for a person to be selected (#18)?

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In a sweepstakes sponsored by Gemini Paper Products, 100,000 entries have been received. If 2 grand prize, 10 first prizes, 35 second prizes, and 600 third prizes are to be awarded, what is the probability that a person who has submitted one entry will win a prize?
 A. The probability is 0.00717 B. The probability is 0.01347 C. The probability is 0.00647 D. The probability is 0.00654
Nov 22nd, 2015

First you need to add up the total amount of prize entries out of the 100,000 entries.

This would be 2+10+35+600=647. So there is a 647 in 100,000 chance of winning a prize

To solve we divide: 647/100,000 = 0.00647 or  0.647%

If you wish to write it in a more mathematical form you could put it as follows:

P(Winning a prize) = 647/100,000 = 0.00647

Nov 22nd, 2015

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Nov 22nd, 2015
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Nov 22nd, 2015
Sep 23rd, 2017
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