A single letter is selected at random from the word “$PROBABILITY$”. The probability that the selected letter is a vowel is
A single letter is selected at random from the word “$PROBABILITY$”. The probability that the selected letter is a vowel is
- A
$\frac{2}{{11}}$
- B
$\frac{3}{{11}}$
- C
$\frac{4}{{11}}$
- D
$0$
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Let $\quad S =\left\{ M =\left[ a _{ ij }\right], a _{ ij } \in\{0,1,2\}, 1 \leq i , j \leq 2\right\}$ be a sample space and $A=\{M \in S: M$ is invertible $\}$ be an event. Then $P ( A )$ is equal to
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