Agniveer Vayu or IAF Group X 13 July 2021 Shift 3 Paper

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Question : 29 of 70

Marks: +1, -0

What is C(n, 1) + C(n, 2) + _ _ _ _ _ + C(n, n) equal to

2 + 2² + 2³ + _ _ _ _ _ + 2ⁿ
1 + 2 + 2² + 2³+ _ _ _ _ _ + 2ⁿ
1 + 2 + 2² + 2³ + _ _ _ _ _ _ + 2^{n - 1}
2 + 2² + 2³ + _ _ _ _ _ + 2^{n - 1}

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