Question

From the set A={3,2 √ ,23 √ ,9 √ ,7 √ },a number is selected at random. Find the probability that is a rational number

Answer 1

Answer on Question #52430 – Math – Statistics and Probability

Question

From the set $A = \{3,2\ \sqrt{,23}\ \sqrt{,9}\ \sqrt{,7}\ \sqrt{,7}\}$, a number is selected at random. Find the probability that is a rational number

Solution

$A = \{\sqrt{3,2}; \sqrt{23}; \sqrt{9}; \sqrt{7}\}$, the only rational is $\sqrt{9} = 3$, which is one of four; The probability of selecting $\sqrt{9}$ is $\frac{1}{4} = 0.25$.

Answer: 0.25.

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