Answer: C(10,7)
Reason:
We can numerically compute both C(10, 3) and C(10, 7) and we would get 120 for each result.
Use the nCr combination formula
In general we have the rule C(n, r) = C(n, n-r)
Answer:
1
Step-by-step explanation:
40
i think? i may have not understood the picture correctly, so if this is wrong i apologise
5 x 2 1/2
l
V
5/1 x 5/2 = 25/2