(I fixed a previous upload where I said 12 – 4 = 4 and I meant 12 – 8 = 4. Thanks to everyone who alerted me: https://youtube.com/shorts/IOI6UukG_h8)
Adapted from Math Kangaroo 2022, student level Q30
https://www.matematica.pt/en/useful/kangaroo-questions.php
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