Poker drew qj of spades.

Playing cards are divided into four colors.

1, playing cards are divided into four colors.

So the probability of drawing spades is 1/4=25%.

2. The front of playing cards is 1 to 13.

The probability of reaching the head (that is, k, q, j) is 3/ 13=23.08%.

Three, seven, there are four.

The probability of winning 7 points is 4/52=7.69%.