Question

set M below consist of the positive even integer less than or equal to 20. M = 2,4,6,8,10,12,14,16,18,20 . if a number from set M is selected at a 4random, what is the probability that the number selected will be A factor of 12

Answer 1

the set consist totally 10 numbers,p(s)=numbers divided by 12/total number

$\text{total number of factors os 12 is 4}$$so,\frac{4}{20}=0.2$