In how many ways 9 friends - alok, badal, carol, dorothy, emily, frank, govind, harish and indivar; be divided equally into 3 groups?
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in 280 ways 9 friends - alok, badal, carol, dorothy, emily, frank, govind, harish and indivar; be divided equally into 3 groups
Step-by-step explanation:
Group 1 Can be selected in ⁹C₃ = 9 * 8 * 7 / (3 * 2 * 1) =84 Ways
Group 2 Can be selected in ⁶C₃ = 6 * 5 * 4/ (3 * 2 * 1) = 20 Ways
Group 3 Can be selected in ³C₃ = 1 Ways
Three groups can be arranged in 3! = 6 Ways
Total number of Ways = 84 * 20 * 1 / 6
= 14 * 20
= 280
in 280 ways 9 friends - alok, badal, carol, dorothy, emily, frank, govind, harish and indivar; be divided equally into 3 groups
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