Probability 1.) There are 12 face cards in a deck of standard playing cards and

Question

Probability

1.) There are 12 face cards in a deck of standard playing cards and 20 even numbered cards (2; 4; 6; 8; 10 in each suit). What is the probability of drawing an even numbered card or a face card when drawing one card.

a. 0.231

b. 0.089

c. 0.615

d. 1.000

2.) There are 12 face cards in a deck of standard playing cards and 20 even numbered cards. If you draw one card and look at it. Then replace it and then draw another card. What is the probability that you would draw a face card and then an even numbered card?

a. 0.089

b. 0.385

c. 0.615

d 1.000

3. ) What is the probability that with three flips of a coin all three flips will be the same?

a. 1/4

b. 1/2

c. 3/16

d. insufficient information to answer this question

Explanation / Answer

Answer:

Probability

1.) There are 12 face cards in a deck of standard playing cards and 20 even numbered cards (2; 4; 6; 8; 10 in each suit). What is the probability of drawing an even numbered card or a face card when drawing one card.

a. 0.231

b. 0.089

answer: c. 0.615

d. 1.000

P=(12+20)/52=0.615

2.) There are 12 face cards in a deck of standard playing cards and 20 even numbered cards. If you draw one card and look at it. Then replace it and then draw another card. What is the probability that you would draw a face card and then an even numbered card?

Answer: a. 0.089

b. 0.385

c. 0.615

d 1.000

P=(12/52)*(20/52) =0.08875

3. ) What is the probability that with three flips of a coin all three flips will be the same?

Answer: a. 1/4

b. 1/2

c. 3/16

d. insufficient information to answer this question

P= P( all heads) or P( all Tails))

=(1/2)^3 +(1/2)^3

=2/8

=1/4

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