Which is divisible by 8

Divide each by 8. See which one doesn't have a remainder.

Eliz.
 
Hello, tomorrow!

Which is divisible by 8? \(\displaystyle \;1336,\;1473,\;1534,\;1662\)
They are all divisible by 8: \(\displaystyle \;\begin{array}{cccc}1336\,\div\,8\:=\:167 \\ 1473\,\div\,8\:=\:184\frac{1}{8} \\ 1534\,\div\,8\:=\:191\frac{3}{4} \\ 1662\,\div\,8\:=\;207\frac{3}{4}\end{array}\;\;\;\) . . . but seriously . . .


There is a test of divisibility-by-8.

It goes like this: a number is exactly divisible by 8
\(\displaystyle \;\;\)if the rightmost three-digit number is divisible by 8.

This is convenient when testing, for example: \(\displaystyle 3,805,274,312\)

Since \(\displaystyle 312\,\div\,8\:=\:39\), the entire number is divisible by 8.


But it not worth the trouble with only a four-digit number.
\(\displaystyle \;\;\)You might as well grab a pencil or a calculator.
 
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