Answer: 0.45 is an answer there are 45% of chances to pick a number greater than 14 or less than four.
Explanation:
For greater than 14 there are 6 numbers available 15, 16, 17, 18, 19, 20. Which mean 6/20= 0.3 is a probability for it.
For lesser than 4 there are 3 numbers available 1, 2, 3. Which means 3/20 = 0.15 is a probability for it.
so in total 0.3+ 0.15= 0.45 is an answer. In percentage 0.45*100=45%.