Question

The mode of the data
set is 21. What number
is missing?
21, 17, _25, 23, 13

Answer 1

21

Explanation:

If 21 is the mode, then it must appear most of the time, here. So, in this case, to be the mode, 21 should appear more than once, and thus, the complete data set will be, 21, 17, 21, 25, 23, 13. ⇒ Missing number = 21

Answer 2

The missing number here is 21