Question

A box contains 2 blue, 3 green and 5 red balls . If three balls are drawn at random , what is the probability that all balls are different in color ?
A. `(3)/(10)`
B. `(1)/(4)`
C. `(3)/(7)`
D. `(4)/(11)`

Answer 1

Correct Answer - B
Total balls = 10
so probability `=(""^(2)C_(1)xx""^(3)C_(1)xx""^(5)C_(1))/(""^(10)C_(3))=(1)/(4)`