## anonymous one year ago 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

1. Black_ninja123

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

2. anonymous

Thanks, could you help me with this? @Black_ninja123

3. 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

4. Black_ninja123

How many letters are there?

5. Black_ninja123

How many o's are there?

6. anonymous

2 O's, 12 letter's

7. anonymous

@Black_ninja123

8. Black_ninja123

$\frac{ 2 }{ 12 }*\frac{ 1 }{ 11 }$

9. anonymous

idk? @Black_ninja123

10. Black_ninja123

you don't know how to multiply fractions?

11. anonymous

No....*blushes embarressed*

12. Black_ninja123

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

13. anonymous

14. Black_ninja123

Yes

15. anonymous

ok, could you help me with 1 more question?

16. 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

17. Black_ninja123

How many sets have odd number in them?

18. anonymous

9?

19. Black_ninja123

No

20. anonymous

?

21. Black_ninja123

12

22. Black_ninja123

wait one sec

23. Black_ninja123

How many sets are there in total?

24. anonymous

36?

25. Black_ninja123

so what is 12/36 simplified?

26. anonymous

1/3?

27. Black_ninja123

Yes

28. anonymous

thanks!

29. Black_ninja123