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In a standard deck of cards, even A is a red card and event B is a face card, what is P(A or B)?

Question 4 options:

A. 25/52

B. 32/52

C. 22/52

D. 38/52

 Apr 18, 2019
 #1
avatar+19908 
0

26 red cards + add'd 6 face cards (the black ones)      out of 52 cards   =  32/52

 Apr 18, 2019
edited by ElectricPavlov  Apr 18, 2019
 #2
avatar+1399 
+1

9 face cards?

macabresubwoofer  Apr 18, 2019
 #3
avatar+19908 
0

Ooops .....sorry

 

26 red cards + 6 add'l face cards    32/52

ElectricPavlov  Apr 18, 2019
 #4
avatar+1399 
0


for any suit there are 3 face cards (J, Q, K) 
there are 4 suits 
so 3*4 = 12 face cards total

macabresubwoofer  Apr 18, 2019
 #5
avatar+19908 
0

BUT 6 of them are counted in the 26 red cards

ElectricPavlov  Apr 18, 2019
 #6
avatar+106533 
+1

P( Red or Face)  = P(Red) + P(Face) - P(Red and Face)   =  26/52 + 12/52  - 6/52  =  32/52

 

 

cool cool cool

 Apr 18, 2019

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