Question

What is the probability of drawing a K, Q or J from a deck of playing cards?

Answer 1

Each of the four sets has a K, Q and J. 
That is 3 (each card) times 4 (for each suit) = 12
Each card deck is 52 cards.
The answer is 12/52 or 3/13

Answer 2

There are 4 type of cards for each King, Queen, or Jack, so that would be 12 cards over 52 total cards. Simplified would be 3/13.