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# probability

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1. We draw a card from a standard deck. What is the probability that it is a Jack, Queen, King, or it is red?

2. I have two standard, six-sided dice, one is brown, and the other is black. I roll them both. What is the probabilty that the sum of the number that I roll is less than 4?

Jun 2, 2021

#1
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1. There are 52 cards in a standard deck. There are 4 jacks, 4 Queens, and 4 Kings. In addition to this, there are 26 red cards

(4+4+4)/2= 6 (because 2 out of the 4 jacks, queens and kings are red)

6+26=32

32/52 is the probability.

You can solve it from here

2.Total possible number of combinations

6*6=36

The number has to be less than 4,

so

1+1

1+2

2+1

1+1

4 combinations

4/36=1/9

So the probability is 1/9 Jun 2, 2021
#3
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Oops i got my second question wrong sorry

mathisopandcool  Jun 2, 2021
#2
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26 red cards +  6 black ( J - Q -K)

32 out of 52 = 8/13

36 possible rolls

the rolls that are less than 4

11

12

21         3 out of 36      1/12

Jun 2, 2021