If the last digit doubled subtracted from the rest is a multiple of 7, the whole number is divisible by 7.
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No, 7 is a natural number divisible by 7 and not 14 for example. In fact every odd multiple of 7 (i.e. 7 times 1,3,5,7,...) is divisible by 7 and not 14.
Every number is divisible by any non-zero number. No, there are an infinite number of odd integers which are not evenly divisible by 7..
The smallest number that is divisible by 5, 6, and 7 is 210.
Any number is divisible by another number. 4143/7 is not a whole number, but it does equal 591.857143. I hope that helps!!
If you have a few different numbers that you are using, divide them each by 8 and if you get a whole number, that number is divisible. If you are trying to figure out what is divisible by 8, you can use a divisibility test.A number is divisible by 8 if:the number formed by the last three digits is divisible by 8.So, an example of this would be:7, 120.This number is divisible by 8 because 120 (the last 3 digits) is divisible by 8!