HELP!!! FAN+ MEDAL
A bag contains 3 yellow tennis balls and 4 green tennis balls. Gordy will select one tennis ball, put it in his pocket, and then select a second tennis ball.

Which expression gives the probability that he will select two green tennis balls?

A. 4/7 * 3/6

B. 4/7 * 4/6

C. 4/7 * 3/7

D. 4/7 * 4/7

Question

HELP!!! FAN+ MEDAL
A bag contains 3 yellow tennis balls and 4 green tennis balls. Gordy will select one tennis ball, put it in his pocket, and then select a second tennis ball. 


Which expression gives the probability that he will select two green tennis balls?
 
 A. 4/7 * 3/6
 
 
 B. 4/7 * 4/6
 
 
 C. 4/7 * 3/7
 
 
 D. 4/7 * 4/7

welshfella · Answer

for one draw P(green ball)  = number of green balls in the bag
                                              ---------------------------
                                                total number of balls in the bag

so what do you think that is?

anonymous · Answer

is it D? @welshfella

welshfella · Answer

No 

what do you make the probability for the first draw?

anonymous · Answer

i figured it out it was A but thanks anyway!

welshfella · Answer

yes you are right