Jack picked a card from a standard deck, looked at it, and then put it back. He then picked a second card. What is the probability that Jack picked a diamond or a queen on either pick?

is it 1/26?

Question

Jack picked a card from a standard deck, looked at it, and then put it back. He then picked a second card. What is the probability that Jack picked a diamond or a queen on either pick? 

is it 1/26?

anonymous · Answer

@phi

campbell_st · Answer

so if you pick a diamond or queen there are 

13 diamonds and then another 3 queens.... the Queen of diamonds is 1 of the 13. 

so you have 16 cards from 52 to select 

so 

P(Diamond, Queen) = 16/52   or 4/13


so 

P(Diamond or Queen) then P(Diamond or Queen) = 4/13 x 4/13

hope it helps

anonymous · Answer

my choices are 1/26, 1/52, 13/52, 16/52

phi · Answer

how many cards are diamonds or queens ?

phi · Answer

campbell told you

phi · Answer

there are 13 diamonds (includes 1 queen).  plus 3 other queens = 16 cards
that is the top number.

how many cards total are there?

anonymous · Answer

52

phi · Answer

that goes in the bottom

anonymous · Answer

16/52

phi · Answer

notice they could have simplified that to 4/13 (but they did not)
both 4/13 and 16/52 are equally correct.