The probability of getting a head, when a coin is tossed, is

In which case, the chance of desired outcome is more?

Case I: Getting $\mathrm{H}$ in a toss of a coin.

Case II: Getting $4$ in a throw of die.

Consider the following two situations:

Situation $1$: Chance of getting $2$ or $5$ in a throw of die.

Situation $2$: Chance of getting $1,3$ or $5$ in a throw of die.

Which situation has more chance to occur?

The table given below is the distribution of marks of $40$ students in a class.

The class-size of the given distribution is

From the given distribution, the class-mark of $6^{\mathrm{th}}$ class is