2022
Mathematics
67ca00ce0c643c71d77dee1f
Evaluate n2 + 1C(n+5) if n = 3
A.
55
B.
45
C.
35
D.
25
Correct Answer: 45
Explanation
32 + 1C(3+5) 9+1C3+5 10C8 = 10!/(8!2!) (10∗9∗8!)/(8!2!)= (10∗9)/2 = 45
32 + 1C(3+5) 9+1C3+5 10C8 = 10!/(8!2!) (10∗9∗8!)/(8!2!)= (10∗9)/2 = 45THIS WEEK's
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