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Earn +20 ptsQ: What is the average of 21 18 15?
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What is the average of 21 and 15?
It is (21+15)/2 = 36/2 = 18
What is the average of 14 15 22 21?
It is: 14+15+22+21 = 72/4 => 18 which is the mean average
What is 18 over 21 times 15?
18/21 x 15 is 12 6/7
What is the mean of the numbers 15 and 21 (not including 15 and 21)?
18
What is the average of 12 15 15 18?
The average is 15.
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