Homework Help: 8th grade math

Posted by Lo on Thursday, April 28, 2011 at 11:27am.

A box contains 6 red balls, 4 white balls, and 5 green balls. If three balls are drawn in succession without being replaced, what is the probability that they are drawn in the order red, white, green?
A
x
8/225
B
x
4/91
C
x
12/445
D
x
1/225

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A card is pulled from a well shuffled deck of standard playing cards and is not put back in the deck. A second card is drawn from the deck. What is the probability that a spade was drawn both times?

A
x
Independent; 1/16
B
x
Dependent; 1/16
C
x
Independent; 1/17
D
x
Dependent; 1/17

8th grade math - Reiny, Thursday, April 28, 2011 at 12:18pm
1st question:

prob = (6/15)(4/14)(5/13) = 4/91

2nd problem:

prob = (13/52)(12/51) = 1/17

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