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24-08-2018
Mathematics

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How many three digit locker combinations are possible if the last number must be an even number?

How many three digit locker combinations are possible if the last number must be an even number class=

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24-08-2018

for the 1st 2 you have a variety of 10 numbers; 1,2,3,4,5,6,7,8,9,0

and its 2 so 20+?

there are only 4 even numbers possible;2,4,6,8

so 20+4=24 combinations

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