### Brain Teasers

# Two Digit Numbers

Take the 2-digit number 45.

Square it (45 x 45) to make 2025

Split this 4-digit number in half to make 20 and 25

Add them (20 + 25) to make 45

Which is what you started with.

Can you find another 2-digit number which does the same?

Square it (45 x 45) to make 2025

Split this 4-digit number in half to make 20 and 25

Add them (20 + 25) to make 45

Which is what you started with.

Can you find another 2-digit number which does the same?

### Answer

55 or 99Hide Answer Show Answer

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