Probability!!!!!!!!!!!!!!!!!!!!
A bag has 2 yellow, 7 red, and 1 green marble. What is the probability of picking a red marble, replacing it, and then picking another red marble?

Question

Probability!!!!!!!!!!!!!!!!!!!!
A bag has 2 yellow, 7 red, and 1 green marble. What is the probability of picking a red marble, replacing it, and then picking another red marble?

anonymous · Answer

7/10 chances

foreverandalways13 · Answer

weelll it would be out of ten marbles and you have 7 red and trying to get 2 red out of ten so meaning you have 7/10 chance to get red

amistre64 · Answer

thats P(red)

we want P(red) and P(red)

foreverandalways13 · Answer

hope thats not confusing...

amistre64 · Answer

... and its not 7/10

amistre64 · Answer

the prob of getting a red on the first try is:  7/10

replacing it and trying to pull out a red again is:  7/10

P(red) and P(red) = 7/10 * 7/10

anonymous · Answer

you have the same probability both times you reach in - 7/10
7/10 x 7/10 = 49/100