Solve integer equations, determine remainders of powers, and much more with the power of Modular Arithmetic.

John and Amy have \(48\) and \(51\) quarters, respectively. If they change them into dollar bills, how many quarters will be left?

Note: There are 4 quarters in a dollar.

What is the sum of all positive prime numbers \(x\) such that \(x^2+2\) is also a prime?

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