Total number of outcomes in the experiment of rolling three balanced dice simultaneously is ........

Two dice are thrown at the same time. Determine the probability that the difference of the numbers on the two dice is $2$.

Sushma tosses a coin $3$ times and gets tail each time. Do you think that the outcome of next toss will be a tail? Give reasons.

Which of the following cannot be the probability of an event?

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability of that card being a jack of a black suit is .........

There are $5$ white,$7$ red,$4$ black and $2$ blue identical balls in a box. One ball is selected at random from the box. Find the probability that the selected ball is either red or black. (in $/18$)