a bag contains 5 green and 7 red balls. Two balls are drawn, what is the probability that one of them is green and other is red. please answer in brief
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5 upon 12 the probability and with green it is 12 volt well they cut off answer is one
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total 5+7=12 balls
We can draw 2 balls out of 12 in 12C212C2 no. of ways.
Further, out of 5 green balls, 1 can be drawn in 5C15C1 no.of ways
Similarly, out of 7 red balls,1 can be drawn in 7C17C1 no. of ways.
Hence, the probability of getting exactly 1 green and 1 red ball on drawing 2 balls=
(5C1×7C1)/12C2=(5×7)/66=0.5303(5C1×7C1)/12C2=(5×7)/66=0.5303
We can draw 2 balls out of 12 in 12C212C2 no. of ways.
Further, out of 5 green balls, 1 can be drawn in 5C15C1 no.of ways
Similarly, out of 7 red balls,1 can be drawn in 7C17C1 no. of ways.
Hence, the probability of getting exactly 1 green and 1 red ball on drawing 2 balls=
(5C1×7C1)/12C2=(5×7)/66=0.5303(5C1×7C1)/12C2=(5×7)/66=0.5303
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