The following are the ages (years) of 5 people in a room:
12
,
21
,
<...
Mathematics, 02.12.2021 19:00 ceceshelby51631
The following are the ages (years) of 5 people in a room:
12
,
21
,
25
,
18
,
13
A person enters the room.
The mean age of the 6 people is now 21.
What is the age of the person who entered the room?
Answers: 2
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