Mathematics · Permutations and Combinations
If Cr represents nCr, and 2(C1/C0) + 4(C2/C1) + 6(C3/C2) + ... + 2n(Cn/Cn-1) = 650, then nC2 =
- 125
- 2300✓
- 3225
- 4625
Correct answer
300
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