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A four-digit number is formed from (0,1,2,3,4,5,6) without repetition. It must be less than (4000) and odd. How many such numbers are possible?

Answer and explanation

Correct answer: (180)

The thousands digit is from (1,2,3), and the units digit is odd from (1,3,5). Separate cases according to whether the thousands digit is odd.

Related tags

PermutationsCombinationsCountingHardFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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