Doesn't play sport
Plays sport |
| |
V V
Takes language | 21 | 17 |
-----------------
Doesn't take language | 12 | 4 |
Answer:
5.26 X 10^-3
Step-by-step explanation:
The answer is nine and one third
Answer:
680
Step-by-step explanation:
Use the binomial coefficient where you choose 
numbers out of 
possible numbers and find the total amount of combinations since order does not matter:
Thus, you can make 680 three-non-repeating-number codes
1. 2
2. 1
3. 6
I'll post the rest in the comments
