You can use whatever you want but must be equal on every item.






  • 1
    $\begingroup$ Is there any particular set of operations that is allowed? Allowing anything to be used can lead to brute force solving with square roots, factorials, and rounding. Is each _ supposed to be replaced with exactly one symbol or can they be replaced with multiple or none? Also, do you have a source for the puzzle? Puzzles from others are okay in most cases, but require attribution to the creator. $\endgroup$
    – Apep
    Commented May 2, 2018 at 17:34

1 Answer 1


I'll take a guess and say that:

12 monkeys 4 dolphins 5 kangaroos = 0 cows, 1 boat 4 hooks 5 humans = 1 human killer shark

I can't figure out the rest.

I'm saying this is really unclear as to what you want us to do. Is this homework? Is this a competition thing? what can we use?


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