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Mathematics, 02.06.2021 01:40, Hruai
Alexey wrote '1*2*3*... 9 = 21' on the board, inserting a plus or minus signs in place of each little star. Sasha changed some of these signs to their opposites so that the result he got was 20. Prove that one of the boys made a mistake.​
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Answers: 3
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Mathematics, 22.06.2019 00:00, djjdjdjdjdNfnd1941
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Mathematics, 22.06.2019 01:00, powella033
Azul has 4 green picks and no orange picks. you add orange picks so that there are 2 orange picks for every 1 green pick. how many picks are there now.
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Alexey wrote '1*2*3*... 9 = 21' on the board, inserting a plus or minus signs in place of each littl...
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