number of the day
Sunday, May 5, 2013
42
The expression
n
7
-
n
is divisible by 42.
The expression
xy
+
x
+
y
can never equal 42.
(these both assume n, x, y are integers)
2 comments:
Unknown
June 2, 2013 at 5:19 PM
What if n=1?
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Amy W.
July 7, 2013 at 2:22 AM
If n=1, n^7-n = 1^7-1 = 0. And 0 is divisible by 42.
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What if n=1?
ReplyDeleteIf n=1, n^7-n = 1^7-1 = 0. And 0 is divisible by 42.
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