I have a strong felling the answer is the fourth shoice according to my calculations.
To evaluate the combination we proceed as follows:
21C3
Given nCk we shall have:
n!/[(n-k)!k!]
thus plugging the values in the expression we get:
21!/[(21-3)!3!]
=21!/(18!×3!)
=1330
Answer: 1330
<u><em>The answer 5 because you would divide 7 by 1.4 or 7/1.4 and you would get the answer 5.</em></u>
<u><em>Hope This Helps!</em></u>
:)
Answer:
the second on 222222222222
Its 14 (20 chars limit thing)
