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2008 iTest Problems/Problem 4

Revision as of 16:12, 7 December 2011 by Yankeesfan (talk | contribs) (Created page with "== Problem == The difference between two prime numbers is <math>11</math>. Find their sum. == Solution == We know that any prime number, excluding <math>2</math> is congruent ...")
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Problem

The difference between two prime numbers is $11$. Find their sum.

Solution

We know that any prime number, excluding $2$ is congruent to $1 \pmod 2$

See also

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