Question

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

Answer 1

1/13 + 1/13 = 2/13

Answer 2

im not understanding

Answer 3

how many cards are in a deck?

Answer 4

54

Answer 5

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

Answer 6

52

Answer 7

good, and how many of them are a 5?

Answer 8

0

Answer 9

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

Answer 10

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.

Answer 11

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

Answer 12

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