## Monday, October 16, 2006

### Math Questions III: p. E-49

16.

What is the probablility of guessing the correct answer to a multiple choice question if there are 5 choices?

-P 1/5

17.

What is the probability of guessing the correct answer to a true-false question?

-P 1/2

18.

What is the probability that your birthday will fall on Saturday or Sunday?

-P 2/7

19.

What is the probability of winning a raffle if 500 tickets are sold and you buy 5 of them?

P 5/500

20.

A class of 25 students has 15 girls and 10 boys. If one student is chosen at random, what is the probability it is a girl?

P 15/20

21.

There are 26 letters in the alphabet(no, really?). What is the probability that a letter chosen at random is in the word MATHEMATICS?

P 8/26

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## 3 comments:

James on Question 20 of yours, i think its supposed to be 15/25.

# of Girls/number of kids.

atleast i think this right!!:)

yea its 15/25=D

I also think so too James, and nice post

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