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7th grade Spinner
Közreműködött: Conard
(Eredeti szerző: Crouch)

A bag contains six yellow marbles and seven blue

marbles.  The marbles are randomly selected one

at a time.  What the odds in favor of picking the

yellow marble on the first selection?

to

You mix the letters  S,E,L,E,C,T,E, and D thoroughly.

Without looking, you draw one letter. 

Find the probability of the event.

P(not C)

 8

 8/7

 7/8

 1/8

If the spinner is spun twice, what is the probability

that the spinner will stop on a vowel THEN a

consonant?

 1/12

  2/9

 1/9

 1/2

L
I
U
E
O
Z

T T H T H T H T T T

H T T H T

H=heads

1/3

 2/3

5/8

 2

T=tails

Find the experimental

probability of

tossing heads.

Suppose you spin

the spinner.

Find the probability.

P(red)=
REDUCE the FRACTION!
R
R
R
R
Y

B

B
G
P(red or blue) =

Suppose you spin

the spinner.

Find the probability.

REDUCE the FRACTION!
R
R
R
R
Y

B

B
G

You mix the letters S,E,M,I,T,R,O,P,I,C,A, and  L

throughly.  Without looking, you draw one letter.

Find the probability that you select a

consonant.

Write your answer in simplest fraction form.

6/12

 2/3

 7/12

 5/12

A pizza shop offer 3 different crust, 4 sauces

and 6 toppings.  How many different pizzas

can they make?

 12

50

 72

100

Find the value of 5!

A bag contains 3 yellow balls and 2 black balls.

If a ball is selected radomly, what are the odds

against picking a yellow ball?

to

34

A lunch menu has 7 different sandwiches, 4

different soups, and 6 different drinks.

How many different lunches consisting of a

sandwich, soup and drink can you make?

24

 168

 17

A coin is tossed four times.  What is the

probability of getting tails four times

in a row?

Suppose the probability that it rains in the next

two days is 1/6 for tomorrow and 1/3 for the

day after tomorrow. 

 

What is P(rain tomorrow,then rain day after tomorrow)

A bag contains 4 blue marbles, 10 green marbles

and 11 yellow marbles.

Twice you draw a marble and replace.

 

Find P(yellow, then blue)

44/25

44/625

11/625

How many different permuations can you

make from the given letters?

H,A,T

P(number less than 6 ) =
P(odd) =

A number cube is rolled once.

P(number  less than 8) =
P(7) =

A number cube is rolled once.

50

Ten people are competing for 1st, 2nd and 3rd

place.  How many different ways could they win?

720 

6

627

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