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A (6)-digit code is formed where the first (2) places can contain only odd digits and the remaining (4) places can contain only even digits. If no digit is repeated then how many codes are possible?

Answer and explanation

Correct answer: (5 \times 4 \times 5 \times 4 \times 3 \times 2=2400)

There are (5) and (4) choices for odd digits and (5,4,3,2) choices for even digits. Filling places one by one is the safest exam method.

Related tags

CountingCodeDigitsFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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