Four Digit Number
Pro Problems > Math > Number and Quantity > Number Theory > DigitsFour Digit Number
I am a four digit number.
The sum of my digits is 20.
The product of my digits is 600.
The difference between my first two digits is 2, and the sum of my middle two digits is 11.
What number am I?
Solution
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Oh, by the way, I'm a perfect square.
What year am I?