Mind-reader

The mind-reader asks a man in his audience to think of a number, multiply it by 5, add 6, multiply by 4, add 9, multiply by 5, and state the result.   Audience chooses the number 12, calculates successively 60, 66, 264, 273, 1365, and announces the last number. Mind-reader subtracts 165 from this result, Read More …