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UKMT Junior Mathematical Olympiad, 2021

Number theory Difficulty 2.0 Junior Prove it United Kingdom

The solution to each clue of this crossnumber is a two-digit number, that does not begin with a zero.

Across
1. A prime
3. A square

Down
1. A square
2. A square

Find all the different ways in which the crossnumber can be completed correctly.

Figure for this problem

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