Only genius would answer this

Solve this puzzle with two tasks. Which operand will you use to play around with animals? The result should be obvious.

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Brain teaser - Number And Math Puzzle - Only genius would answer this - Solve this puzzle with two tasks. Which operand will you use to play around with animals? The result should be obvious.

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The question mark stands for the third sign in a row - it's a plus.

Use the plus in the equations.

20 + 20 + 20 = 60

2x10 + 20 = 40

2x5 + 10 + 20 = 40

2x5 = 10.

The result is 10.

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