Two dice are thrown. The events $A, B$ and $C$ are as follows:

$A:$ getting an even number on the first die.

$B:$ getting an odd number on the first die.

$C:$ getting the sum of the numbers on the dice $\leq 5$

Describe the events $B$ or $C$

A coin is tossed. If it shows a tail, we draw a ball from a box which contains $2$ red and $3$  black balls. If it shows head, we throw a die. Find the sample space for this experiment.

From a pack of $52$ cards two cards are drawn in succession one by one without replacement. The probability that both are aces is

Cards are drawn one by one without replacement from a pack of $52$ cards. The probability that $10$ cards will precede the first ace is

A bag contains $3$ red and $7$ black balls, two balls are taken out at random, without replacement. If the first ball taken out is red, then what is the probability that the second taken out ball is also red