What is the mode of 18, 18, 15, 18, 18, 24, 21, 21, 24, and 14?

Mode means a popular number

Answer : 18

Mode: The number that occurs most often in a set of numbers.

To find the mode, first list these numbers in order from least to greatest.

14 - 15 - 18 - 18 - 18 - 18 - 21 - 21 - 24 - 24

Next, look at the list of numbers and identify which number repeats the most in the set. The number 18 occurs 4 times and no other number occurs 4 times or more so our mode for this set of number would be 18.