If there is a spinning wheel with $3$-blue sectors, $1$-red sector and $1$-green sector of same size, what is the probability of getting a blue sector?

Rahul notes the time when his bus has been coming for the last $11$ days.

If Rahul reaches his bus stop at $8:55,$ what is the probability that he has missed the bus?

A card is drawn from a well-shuffled deck of $52$ cards. Find the probability of getting: a black card 

A card is drawn from a well-shuffled deck of $52$ cards. Find the probability of getting: a red card

A card is drawn from a well-shuffled deck of $52$ cards. Find the probability of getting: a diamond card.

A card is drawn from a well-shuffled deck of $52$ cards. Find the probability of getting: a black number card

A card is drawn from a well-shuffled deck of $52$ cards. Find the probability of getting: a face card

A card is drawn from a well-shuffled deck of $52$ cards. Find the probability of getting: an ace of hearts