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19-04-2017
Mathematics

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In a group of seven consecutive numbers, 4/7 of the numbers are even. explain how you know that the middle number cannot be a multiple of 2

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19-04-2017

The numbers are 2,3,4,5,6,7,8

You have 4 even numbers the middle one is odd (5) because you have to start with even number so you can have 4 even numbers
The middle number is X+ 3. So if 2+3 can't give you a even number same as saying multiple of 2 .

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