Question on math Please
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Question on math Please

[From: ] [author: ] [Date: 11-05-31] [Hit: ]
Thank you!-There are 10 cards in all.0.=0.thats it:)-0.3 for football 0.......
A grab bag contains 3 football cards and 7 basketball cards. An experiment consists of taking one out of the bag, replacing it, and then selecting another card. What is the probability of selecting a football card and then a basketball card? Express answer as a decimal.

Thank you!

-
There are 10 cards in all.

3/10 * 7/10
21/100
0.21 <===ANSWER

-
the probability of selecting a football card and then a basketball card
is
the possibility of drawing a football card is
3/10
and after it has been replaced the possibility of drwing basketball card is 7/10
thus the the probability of selecting a football card and then a basketball card is
= 3*7/100
=21/100
=0.21
thats it:)

-
0.3 for football 0.7 for baseball
1
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