Question 803489
The ways to form a 4-person committee from a group of 12 people  (Combination)




The ways to form a 4-person commitee from a group of 12 people such that there is a president, vice-president, secretary and treasurer. (Permutation)
The ways to arrange the letters A, B, C, D(Permutation)
The serials numbers formed using the numbers 0-9 where no repeats are allowed.(Permutation)
The ways to split a class of 125 into 5-person groups. (Combination)

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