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It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
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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.
Related questions
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?
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What is the average of 12 15 15 18?
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What is the average of 12 and 18?
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