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I did a question that asked how many 3digit even numbers can be made using the digits 1,2,3,4,5,6,7 if no digit is repeated? then the answer when I checked was fpc=3X5X4=60 But for an even number if only the last digit is even then the number will be even as it is So why it can't be fpc=7X6X3. ? |
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Answer» I did a question that asked how many 3digit even numbers can be made using the digits 1,2,3,4,5,6,7 if no digit is repeated? then the answer when I checked was fpc=3X5X4=60 But for an even number if only the last digit is even then the number will be even as it is So why it can't be fpc=7X6X3. ? |
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