Question 971680
Or probabilities are the sum minus double counting.

Probability <16 =0.15 
Probability  of red =0.5
Double counting is 0.16

Probability is 0.50, same as selecting one that is red.

Second part is ambiguous.  Here are possible solutions:

Blue is 0.5
Blue or multiple of 5 is 0.50 and 0.10 from others not blue that are divisible by 5 =0.60

Blue and multiple of 5 is 0.10