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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingHard
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There are (10) true-false questions. The last answer is fixed as true, and the first (3) answers cannot all be the same. How many answer patterns are possible?

Answer and explanation

Correct answer: (384)

The first (3) answers have (2^3-2=6) choices, and the middle (6) answers have (2^6) choices. Multiply by (1) for the fixed last answer.

Related tags

Permutations-And-CombinationsFundamental-PrincipleCountingHardFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq
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