- anonymous

There are 25 people competing in a race. In how many ways can they finish in first and second place?
A)49
B)400
C)600
D)625

- schrodinger

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- Black_ninja123

There is 25 choices for first
There is 24 choices for second
Multiply the numbers and you should get your answer

- anonymous

Thanks, could you help me with this? @Black_ninja123

- anonymous

A bag contains tiles with the letters C-O-M-B-I-N-A-T-I-O-N-S. Lee chooses a tile without looking and doesn’t replace it. He chooses a second tile without looking. What is the probability that he will choose the letter O both times?
A)1/132
B)1.72
C)1/66
D)1/23

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## More answers

- Black_ninja123

How many letters are there?

- Black_ninja123

How many o's are there?

- anonymous

2 O's, 12 letter's

- anonymous

- Black_ninja123

\[\frac{ 2 }{ 12 }*\frac{ 1 }{ 11 }\]

- anonymous

idk? @Black_ninja123

- Black_ninja123

you don't know how to multiply fractions?

- anonymous

No....*blushes embarressed*

- Black_ninja123

\[\frac{ 1 }{ 6 }*\frac{ 1 }{ 11 }\]
First Multiply the top numbers then multiply the bottom numbers

- anonymous

1/66 is the answer?

- Black_ninja123

Yes

- anonymous

ok, could you help me with 1 more question?

- anonymous

The sample space for a roll of two number cubes is shown in the table.
What is the probability that the roll will result in two odd numbers?
A) 1/9
B) ¼
C) 1/3
D) 4/9

##### 1 Attachment

- Black_ninja123

How many sets have odd number in them?

- anonymous

9?

- Black_ninja123

No

- anonymous

?

- Black_ninja123

12

- Black_ninja123

wait one sec

- Black_ninja123

How many sets are there in total?

- anonymous

36?

- Black_ninja123

so what is 12/36 simplified?

- anonymous

1/3?

- Black_ninja123

Yes

- anonymous

thanks!

- Black_ninja123

Your welcome :)

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