A dice is thrown twice. The probability of getting $4, 5$ or $6$ in the first throw and $1, 2, 3$ or $4$ in the second throw is
$1$
$\frac{1}{3}$
$\frac{7}{{36}}$
None of these
On her vacations Veena visits four cities $( A ,\, B ,\, C$ and $D )$ in a random order. What is the probability that she visits $A$ just before $B$ ?
A die is thrown, find the probability of following events: A number greater than or equal to $3$ will appear.
A single letter is selected at random from the word “$PROBABILITY$”. The probability that the selected letter is a vowel is
Probability of throwing $16$ in one throw with three dice is
A bag contains $3$ white and $2$ black balls and another bag contains $2$ white and $4 $ black balls. A ball is picked up randomly. The probability of its being black is