SOLUTION: if two numbers are selected from 1 to 25,the number of ways that their difference does not exceed 10 is

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Question 743750: if two numbers are selected from 1 to 25,the number of ways that their difference does not exceed 10 is
Answer by lynnlo(4176) About Me  (Show Source):
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FROM 1-25
DOES NOT EXCEED 10
1+9,,,,,2+8,,,,,3+7,,,,,,4+6
4 WAYS