Answer:
C(7, 4) = 35
Step-by-step explanation:
This is called combination.
The total number of elements (n) = 7
The number elements in a subset(r) = 4
The number of subsets = C(7, 4)
= 7!/4!(7 -4)!
= 7!/4!3! [7! = 5040, 4! = 24, 3! = 6]
= 5040 / (24*6)
= 5040/144
= 35 ways
Answer is C(7, 4) = 35
Hope this will helpful.
Thank you.