How can you create the square of 3 by adding just one matchstick? Can you solve this in just 25 seconds?
3*3 = 9, so the square of 3 is 9.
Consider where to add a matchstick to transform the numeral 3 into the numeral 9.
Put one matchstick on the left side of the number 3.
Now, with that matchstick added, number 3 turns into 9.
Take a look at how the matchstick changes 3 into 9.
With one matchstick we create a square of number 3.
Adding just one matchstick to transform the numeral 3 into the numeral 9 is indeed a fun and creative way to represent the square of 3 in just one move.