Answer:
Mode = 10
Explanation:
What is the mode?
The mode is the number that occurs the most in a set of data. For instance, let's say we have the following set:
3, 5, 9, 10, 11, 12, 10, 16, 10, 17, 10
Can you see that the most common number in this set is 10? Well, this means that 10 is the mode of the dataset.
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Let's see how this works with our little set, which is;
15, 15, 10, 12, 10, 16, 10
Looks like 10 is the mode once again, because it happens 3 times while the others occur once or twice (15 occurs twice in the set).
So I conclude that 10 is the mode.