## Thursday, October 19, 2006

### Kendra's E-49 19-21

Question 19

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

P(win)
P.O/T.P.O
5/T.P.O
5/500
1/100
0.01*100
1%

Question 20

A class of 25 students has 15 girls and10 boys. If one student is chosen at random, what is the probability it is a girl?

P(girl)
P.O/T.P.O
15/T.P.O
15/25
3/5
0.6*100
60%

Question 21

There are 26 letters in the alphabet. What is the probability that a letter chosen at random is in the word MATHEMATICS?

P(mathematics)
P.O/T.P.O
8/T.P.O
8/26
4/13
0.307*100
30.7%

HINT: Do not count letters that are repeated in the word mathematics. If you do that,the answer would be 11/26 0.423 42.3%.

My own question

You go to a circus with 44 clowns. 12 don't talk and 32 talk. If a clown was chosen at random, what is the probability of a non-talking clown being chosen?

P.O/T.P.O
12/T.P.O
12/44
3/11
0.27*100
27%

#### 1 comment:

Mr. H said...

Great Job but the green is difficult to see. Try a differnt colour.

Great Job Keep it up. Part 2 is on the way.

Mr. H