Ed has 4 cards.
There is a number on each card.
12
6
15
?
The mean of...
Mathematics, 12.04.2021 14:00 sparkyjones02
Ed has 4 cards.
There is a number on each card.
12
6
15
?
The mean of the 4 numbers on Ed's cards is 10
Work out the number on the 4th card.
Answers: 2
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