Math Question

1. Suppose you roll a 6 faced die.

A. How many equally outcomes are there?

Answer: There are 6 outcomes

E. If you roll the die once,what is the probability of rolling a 3?

Answer:1 in 6

H.If you roll the die 60 times about how many times would you expect to get a 1?

you might roll it 6 times.

My question: Someone gave you 5 eminems there were 2 green, 2 yellow,and 1 red. What is the probability of eating a green one?

mMm dela cruzzz's math homework...

E-49

Marygrace Dela Cruz . . .

19. The probability of winning a raffle if 500 tickets are sold and you buy 5 of them is 5/500 or 1/100. you would only have a 1 percent chance that you would get a winning raffle.

20. The probability that a girl will be chosen from random of 25 students is 15/25.

Every random pick out of 25, 15 times it will be a girl.

21. The probability that a letter is chosen at random in the word MATHEMATICS is 8/26 or 4/13.

Because there are two Ms, two As, and two Ts, there are 8 DIFFERENT letters.

My own question:

What is the probability that a letter chosen at random is in the word . . .

SUPER­CALI­FRAGI­LISTIC­EXPI­ALI­DOCIOUS???

My answer:

Well scince there are ...

- 3 Ss - 3 Ls

- 2 Us - 7 Is

- 2 Ps - 1 F

- 2 Es - 1 G

- 2 Rs - 1 T

- 3 Cs - 1 X

- 3 As - 1 D

- 2 Os

... and only 26 letters in the alphabet,

the probability of a letter being chosen

at random is this word is 15/26.

There are only 15 DIFFERENT letters.

Math Questions

1. 1/5 (red) This is 1/5 because there is only 1 chance out of 5 of getting red

2.1/5 (green) This is 1/5 because there is only 1 chance out of 5 of getting green

3.2/5 (blue or white) This is 2/5 because there is only 2 chances of 5 of getting blue or white
4. 4/5 (not yellow) This is 4/5 because there is only 4 out of 5 chances of not getting yellow

5.4/5 (not red) This is 4/5 because there is only 4 out of 5 chances of not getting red

6. 3/5 (blue, white and yellow) This is 3/5 because there is only 3 out of 5 chances of getting blue white or yellow

Question I created:

Find the Probability of getting a white??

e-50 #2

Angelic M.

October 16,2006

8-41

2. A spinner is shown below for which outcome is NOT equally likely.

(E) If you spin the spinner once, what is the probability that it'll stop on A?
A takes up the same amount of romm that b and c do together. If you divide A in half, there would be 4 parts. Then there are 2 a's so, 2/4 or 1/2.
(A) If you spin the spinner once, what is the probability that it'll stop on B?
Again, A stands for 2 parts, so there are 4 parts all together. B takes up one of the 4 spots so, 1/4.
(T) If you spin the spinner 50 times, about how many times would you expect it to stop on A?
A takes up half of the room. Half of 50 equals 25. 25 is the answer.
(Y) If you spin 80 times, about how many times would you expect to stop on C?
C takes up a quarter of the room. A quarter is the same thing a as a fourth. 80 divided by 4 equals 20. 20 is the answer.
(MY QUESTION) If you spin the spinner 240, how many times would it supposedly stop on B?
240 divided by 4 equals 60 (24 divided by 4 equals six, add a zero at the end, voila!). Again B takes up a fourth of the space, and so forth, the answer is 60!

1)


2) (1) 1/5 (2)1/5 (3) 1/5 (4) 4/5 (5) 4/5 (6) 1/5


3) Find the probability of spinning on white.



Leslie 8-41 Oct. 16, 2006

Math Questions & Answers Page E-50 Part VI (# 2)

A spinner is shown at the right for which each outcome is NOT equally likely.

If you spin the spinner once, what is the probablity that it will stop on A?

The probablity of the spinner landing on A after one spin would be Pa=2/4, or simplified to Pa=1/2, because A takes up half or two quarters of the spinner. (A/AllOtherAreas)

If you spin the spinner once, what is the probablity that it will stop on B?

The probablity of the spinner landing on B after one spin would be Pb=1/4, because B takes up 1 quarter of the spinner. (B/AllOtherAreas)

If you spin the spinner 50 times, about how many times would you expect it to land on A?

You would expect the spinner to stop on A about 25 times, because the probablity of getting A is 1/2. And 25 is half of 50.

If you spin the spinner 80 times, about how many times would you expect it to land on C?

You would expect the spinner to stop on C about 20 times, because the probablity of getting C is 1/4. And 20 is one quarter of 80.

--{*Create-A-Question*}--

Pretend B took up about 40% (2/5) of the spinner, and C took only 10% (1/10) of the spinner.

Then, if you spinned the spinner 20 times, how many times would it land on B?

Or on C?

Or A?

-apuya

Math Questions and Answers E-49 16-21

16.What is the probablility of guessing the correct answer to a multiple choice question if there are 5 choices?
-1/5 = your choice of answers/total possible answers.

17.What is the probability of guessing the correct answer to a true-false question?
-1/2 = your choice of answers/total possible answers.

18.What is the probability that your birthday will fall on Saturday or Sunday?
-2/7 = Saturday,Sunday/total number of days in a week.

19.What is the probability of winning a raffle if 500 tickets are sold and you buy 5 of them?
-5/500=1/100 = # of "my" raffle tickets(ya thats right,MINE!)/#of tickets sold.

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?
-15/25 = # of girls/# of total students.

21.There are 26 letters in the alphabet(wow i didn't know thatXD). What is the probability that a letter chosen at random is in the word MATHEMATICS?
-8/26 = there is 11 letters in mathematics but there are only 8 different letters.

Question. At the Grey Cup game the seats went all around the stadium and there are 100,000 seats in total. There are also only three rows. 50,000 in the top row, 25,000 in the middle row and 25,000 seats in the bottom row. If i buy a ticket for each row what is the probability i will get all middle seats in each row? This ones a brain teaser!