Question
A bag contains ‘x’ red balls and 4 green balls. If the
probability of getting a red ball is 3/5, then find the probability of getting different coloured balls when two balls are drawn randomly from the bag.Solution
x/(x + 4) = 3/5
→ 5x = 3x + 12 → x = 6
Total balls = 10
P = ( 6 C 1 × 4 C 1 )/( 10 C 2 ) = (6 × 4)/45 = 24/45 = 8/15
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