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Question 643340: All numbers can be written as the sum of two consecutive digits. True or False ?
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! False.
If the first number is even, then the second is odd. If the first number is odd, then the second number is even.
The rule is that
even + odd = odd
odd + even = odd
So you can only get odd numbers by adding consecutive numbers. You cannot get any even numbers.
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