This is a combination in which you choose 4 from 10.
The formula is
combinations = 10! / 4! * (10-4)!
combinations = 10! / 4! * 6!
combinations = 10 * 9 * 8 * 7 * 6! / 4! * 6!
combinations = 10 * 9 * 8 * 7 / 4 * 3 * 2
combinations = 10 * 3 * 7
combinations = 210
Source:
http://www.1728.org/combinat.htm
Answer:
the answer is B
Step-by-step explanation:
just did the test
Answer:
y=-x+3
Step-by-step explanation:
rise/run
-1/1
-1
Answer 225
Step-by-step explanation:
60/4=15. 15*15= 225