Answer To Last Week's Quiz

 Last week, I asked what 0, 1 and ∞ have in common.   The answer is that if you raise them to any positive power, their value does not change.  For example 0 squared is 0, 1 squared is 1, ∞ squared is infinity.  Similarly, any root of them does not change their value, so the square root of 0 is 0, of 1 is 1 and of infinity is infinity.