Answer:
14
Step-by-step explanation:
Although the typing has some typographical issues. We could extract the following:
First quartile (Q1 => 0.25) = 4
Second quartile/median (Q2 => 0.50) = 5
Third quartile (Q3 => 0.75) = 10.
The upper fence (maximum):
==>[Q3 + Q1] = 10+4 = 14.
NB: If all our assumed values from the question are correct!