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Mathematics, 10.10.2021 16:50 guardhic7165
There are five envelopes on a table. Four of the envelopes are marked 8, 2, 4 and 1. You are told that the mean of the numbers on the envelopes is 4. What is the number on the fifth envelope?
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There are five envelopes on a table. Four of the envelopes are marked 8, 2, 4 and 1. You are told th...
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