teaser of the day
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pending
There is an integer which shows a very peculiar feature: no matter any number is subtracted from it, the result is always exactly divisible by successor of that number. What is the integer??
The answer is -1.
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1 solution
The integer is −1. For instance, if 4 is subtracted from −1, then we get (−1) − 4 = −5, which is divisible by 5 (one more than 4). If 9 is subtracted from −1, then we get (−1) − 9 = −10, which is divisible by 10 (one more than 9).