To find the mean of the numbers 15, 18, and 24, you first add them together: 15 + 18 + 24 = 57. Then, divide the sum by the number of values, which is 3: 57 ÷ 3 = 19. Therefore, the mean of the numbers is 19.
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19
24
(21+15+19+28+10+17+9+15+26+14+10+18+24+12+16) / 15 = 16.93 recurring (that is, 16.93333...)
Mean is the average of numbers. For example, if you were trying to get the mean of 24 and 12, you would first add the numbers (which is 36) and you divide them by how many numbers are in the problem (which is 2). So the answer would be 18.
The LCM is: 360