Of the 10 marbles in the container, 5 are green. So if Aileen doesn't peek,
her chance of drawing a green marble is 5/10 or 0.5 .
The chance that she will draw a green marble the first time is 0.5 .
The chance that she will draw a green marble the second time is 0.5 .
The probability that she will draw a green marble <u>both</u> times is
(0.5) x (0.5) = <em>0.25 </em> or 25 percent .
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A triangle with two congruent sides and two congruent angles ( base Angles) is called isosceles triangle.
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