Question

Please Help!! Will Medal (answer must be correct)

You have a 4-card deck containing a queen, a jack, a 10, and a 9. You draw a random card, put it back, and draw a second random card. Use a tree diagram to calculate the probability that you draw exactly 1 "numbered" card (a 9 or a 10).

Answer 1

1/2

Answer 2

You sure?

Answer 3

dontknow my guess if isit right i will explain

Answer 4

I can't risk guesses. This is my last time through this if I don't pass my teacher is not awake to reset it.

Answer 5

|
+---10
| +---10
| +---9
| +---J
| \---Q
+---9
| +---10
| +---9
| +---J
| \---Q
+---J
| +---10
| +---9
| +---J
| \---Q
\---Q
+---10
+---9
+---J
\---Q

So, in the top half we have a face card listed 2 times and another 2 times out of 8 pairings.
In the bottom half it is flipped around, but the probability.
8 times out of 16 one face card.

Answer 6

Alrighty

Answer 7

see without tree method selecting one card from two cards is 2c1=2
total no of cards is 4 so prob=1/2

Answer 8

got it @moemand

Answer 9

Thank you kindly.

Answer 10

yw