one card is selected at random from a deck of cards. Determine the probability that the card selected is a 5 or a 7.

Question

amistre64 · Answer

1/13 + 1/13 = 2/13

anonymous · Answer

im not understanding

amistre64 · Answer

how many cards are in a deck?

anonymous · Answer

54

amistre64 · Answer

... count again, how many cards are in a deck :)

anonymous · Answer

52

amistre64 · Answer

good, and how many of them are a 5?

anonymous · Answer

attachment

amistre64 · Answer

there are zero 5s in a deck of cards ...... really?

anonymous · Answer

In a deck, there are 52 cards, there are 8 cards of 5 and another 8 cards of 7. Hence, we can conclude that the probability is 16/52. SImplifying the fraction, it's a 4/13.

amistre64 · Answer

there are 8 5s in a deck of cards?  i think your brain is working about as good as mine today ;)

anonymous · Answer

Sorry. :P
4 5s and 4 7s in a deck. What am I doing? (And I don't really play cards actually. Honestly.)
So it's 8/52. Then 2/13