What is the probability of drawing a king from a deck of 52 cards?

Hence for drawing a card from a deck, each outcome has probability 1/52. The probability of an event is the sum of the probabilities of the outcomes in the event, hence the probability of drawing a spade is 13/52 = 1/4, and the probability of drawing a king is 4/52 = 1/13.

What is the probability of drawing 2 cards both are spade in a standard deck of 52 cards?

The chance that the first card drawn is a spade is 13/52, as there are 13 spades in a deck of 52 cards. IF it isn't a spade, the chances of both being spades are 0. If it is a spade, the chances that the second card drawn is a spade are 12/51, as there are only 12 spades left, and the deck now holds only 51 cards.

What is the probability of drawing a 3 from a deck of cards?

A standard deck of playing cards has four suits — each suit has 3 face cards. That means a standard deck already contains twelve face cards, so the probability of getting three is 100%. Or did you mean “What is the chance of getting 3 face cards by picking only three cards without replacement?”