Prob&stats
posted by Rosa on .
Search results for: Using numbers 120 what is probability a randomly chosen number is either an even number or a number greater than 14?

Even = 10/20
over 14 = 6/20
Since 3 numbers are duplicated (in both categories), that probability needs to be subtracted.
Eitheror probability is sum of the individual probabilities. 
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.