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

3 comments:

Kilik said...

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

atleast i think this right!!:)

mary said...

yea its 15/25=D

Smiliies said...

I also think so too James, and nice post