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March 5, 2015

March 5, 2015

Posted by **Gabby** on Friday, April 19, 2013 at 9:02pm.

You can write the letters K-A-N-S-A-S on cards and mix the cards in a hat.

1.

What is the probability of picking an N? (1 point)

one-sixth

one-fifth

five over one

six over one

2.

What is the probability of picking an S? (1 point)

one-sixth

one-half

one-third

two-fourths

3.

What is the probability of picking a vowel? (1 point)

one-sixth

one-half

one-third

two-fourths

4.

What are the odds in favor of picking an S? (1 point)

one-half

four-halves

two-sixths

six-halves

5.

What are the odds against picking an S? (1 point)

one-half

two over one

two-sixths

six-halves

6.

A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. Find P(5).

(1 point)

one-third

one-half

one-tenth

one-fourth

7.

A bag contains 7 green marbles and 4 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? (1 point)

7:11

7:4

4:7

3:7

8.

A bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. You choose a marble, replace it, and choose again. Find P(red, then blue). (1 point)

seventy-seven over one hundred sixty-four

nineteen over forty-one

ninety over one thousand six hundred and eighty-one

forty-five over forty-one

10.

You have four $1 bills, two $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. Find P($1, then $10). (1 point)

nine over thirty-nine

five over sixty-four

three over eighty

one-twelfth

11.

A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jonas picks a fruit at random and does not replace it. Then Beth picks a fruit at random. What is the probability that Jonas gets a peach and Beth gets an apple? (1 point)

fifteen over one hundred eighty-two

eight over twenty-seven

four over ninety-one

fifteen over one hundred ninety-six

12.

The probability of a basketball player hitting a foul shot is one-third. How many shots would you expect her to make in 90 attempts? (1 point)

30

60

3

45

13.

Simplify 8P3. (1 point)

42

336

40,432

56

14.

How many ways can 3 students be chosen from a class of 20 to represent their class at a banquet? (1 point)

6,840

3,420

1,140

2,280

15.

You and 3 friends go to a concert. In how many different ways can you sit in the assigned seats? (1 point)

6 ways

12 ways

24 ways

10 ways

16.

You own 5 pairs of jeans and want to take 2 of them on vacation. In how many ways can you choose 2 pairs of jeans? (1 point)

10 ways

15 ways

4 ways

20 ways

- I will be posting my answers in a sec

(also these are 2 lessons together so it's a bit extensive umm again srry lol)

- 7th Grade Math Ms. Sue! -
**Gabby**, Friday, April 19, 2013 at 10:39pmMy Answers~

1)A

2)D

3)D

4)B

5)A

6)B

7)B

8)C

10)A

11)B

12)D

13)D

14)C

15)A

16)B

Ok are these correct Ms. Sue, Write Teacher, Knight, or Steve???

- 7th Grade Math Ms. Sue! -
**Ms. Sue**, Friday, April 19, 2013 at 10:50pmTo begin -- I don't know the answers for 8, 10, 11, 13-16.

You didn't post # 9.

Do you have an error in number 5?

Other than that, I found only one of your answers to be correct. Number 1 is correct.

Since I may be wrong, I urge you to go back over your lesson to make sure you still think your answers are correct.

Then repost these questions along with your answers -- but post no more than five questions and answers in each post. Do not put any name on it so that real math teachers will respond!

- 7th Grade Math Ms. Sue! -
**Reiny**, Friday, April 19, 2013 at 11:00pmHere are my answers:

1A 2C 3C 4A 5B 6C 7B 8C 10D 11A 12A 13B 14C 15C 16A

They should have posted the answers to #4 and #5 in the form a:b, that is how odds are expressed.

After all , they did it correctly in #7

Remember, odds are similar to probabilities.

the odds in favour of some event

= prob(the event happens) : prob(event does not happen)

- 7th Grade Math Ms. Sue! -
**Gabby**, Friday, April 19, 2013 at 11:28pmOMG THX SOOO MUCH REINY lol.

However I will make sure to do it all myself so that I'm not cheating but will look over my whole lesson again THX AGAIN~!!!

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