general Maths Puzzle

The three solutions of the equation f(x)=0 are -2, 0, and 3. Therefore, the three solutions of the equation f(x-2)=0 are

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general Other Question

A Four digit safe code does not contain the digits 1 and 4 at all. What is the
probability that it has at least one even digit?
Find all ordered pairs (a,b) of positive integers such that |3^a-2^b|=1.