shukes30 shukes30

13-04-2018
Mathematics

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how many six digit even numbers are possible if the leftmost digit cannot be zero

Respuesta :

14-04-2018

1st digit cannot be 0 so there are 9 choices {1,2,3,4,5,6,7,8,9}. The middle 4 digits have 10 choices (can have 0). The last digit must be EVEN or 0 to make the entire 6 digit number even, {0,2,4,6,8} = 5 choices

9×10×10×10×10×5 = 450,000

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