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  4. In IITJEE-2016, a multiple choice question has four alternatives in which two or more than two are correct. Number of ways in which this question can be answered, is

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Q. In IITJEE-2016, a multiple choice question has four alternatives in which two or more than two are correct. Number of ways in which this question can be answered, is

Permutations and Combinations

Solution:

Required number of ways $={ }^4 C _2+{ }^4 C _3+{ }^4 C _4=11$