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Quantitative Aptitude

Fundamental Principle of Counting

Nidhi has 6 f...

Question

Nidhi has 6 friends. In how many ways can she invite one or more of them to a party at her home?

A

2⁴

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B

2⁵

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C

63

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D

64

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Solution

The correct option is A
2⁴

There are two options associated with each case
Therefore, the number of ways she can do it is 2⁶ - 1 = 63

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