Question

Question 56
Following cards are put facing down :
$\begin{array}{ccccc}A& E& I& O& U\end{array}$

What is the chance of drawing out
(a) a vowel
(b) a card marked U?
(c) A or I
(d) a consonant?

Answer 1

(a) We can clearly see that all the 5 letters are vowels, i.e. A,E,I,O,U. Hence, it is certain to draw a vowel, i.e. probaility of drawing a vowel is 1,
(b) $Probability=\frac{NumberofcardsmarkedU}{Totalnumberofcards}=\frac{1}{5}$
(c) $Probability=\frac{NumberofcardsmarkedAorI}{Totalnumberofcards}=\frac{2}{5}$
(d) $Probability=\frac{Numberofcardsmarkedwithaconsonant}{Totalnumberofcards}=\frac{0}{5}=0$
Hence, it is impossible to draw a consonant.