DAY 453

Credit: Zack Guido
OF COURSE
Presented  by Will Shortz
on NPR Weekend Edition Sunday Puzzle
October 29, 2017

The equation 65 - 43 = 21 is wrong. The answer should be 22. But can you move two numbers in the equation to make a new equation that is correct? The answer remains a straightforward subtraction problem, no symbols are changed or moved, and no parentheses are needed.

Answer:

Move the 3 and the 2 to make them exponents:

65 - 4 (cubed) = 1 (squared) 

65 - 64             = 1