two black balls and 5 white balls are placed ina bag. if amy draws two balls from the bag, what is the proabiblity that they are both white?
two black balls and 5 white balls are placed ina bag. if amy draws two balls from the bag, what is the proabiblity that they are both white?
The 1st ball has a 5 out of 7 chance of being white.
If a white one is drawn, then the 2nd ball has a 4 out of 6 chance of being white.
The chance of both things happening, multiply them together 5/7 • 4/6 = 20/42 = 10/21 = about 47.6%
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