A letter lock consists of 3 rings each containing the alphabets A,B,C,D,E,G,H,I find the numner of false trials that can be made.How may false trials can be made in the attempt of opening the lock?(solve using permutation)
A letter lock consists of 3 rings each containing the alphabets A,B,C,D,E,G,H,I find the numner of false trials that can be made.How may false trials can be made in the attempt of opening the lock?(solve using permutation)
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Total combinations= 9×9×9 = 729
correct combination = 1
false combination= 729 - 1 =728
So a maximum of 728 false trials can be made.