Answer to Question #51602 in Statistics and Probability for ojomona

Question

From the set A = {3, root 2, 2root 3, root 9, root7}, a number is selected at random. Find the probability that is a rational number.
a) 1/5
b) 2/5
c) 3
d) 4

Answer 1

In the set A = {3, root 2, 2root 3, root 9, root7} only two numbers are rational. If a number is selected at random, the probability that it is a rational number is P = 2/5. So, the right answer is b)