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A (4)-digit number is formed from (0,1,2,3,4,5,6). It must be even, the first digit must not be (0), and no digit is repeated. How many numbers are possible?

Answer and explanation

Correct answer: (360)

Count separately the cases when the last digit is (0) and when it is (2,4,6). For zero restrictions, casework is safer.

Related tags

CountingEven-NumberZero-RestrictionFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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