A box contain 7 red‚ 6 white and 4 blue how many selections of three balls of each colour
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A box contains 7 red,6 white and 4 blue balls how many selections of 3 balls of each colour
Step-by-step explanation:
3 Red Balls out of 7 Red balls can be selected in ⁷C₃ ways
3 White Balls out of 6 White balls can be selected in ⁶C₃ ways
3 Blue Balls out of 4 Blue balls can be selected in ⁴C₃ ways
⁷C₃ * ⁶C₃ * ⁴C₃
= 35 * 20 * 4
= 2800 Ways
3 balls of each colour can be selected in 2800 Ways
if Total three balls , one of Each color has to be selected then
⁷C₁ * ⁶C₁ * ⁴C₁
= 7 * 6 * 4
= 168 Ways
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