there are seven children to be lined up in a straight line for a photograph a. how many different ways are possible? b. how many different ways are possible if Sally must be in the middle?
there are seven children to be lined up in a straight line for a photograph a. how many different ways are possible? b. how many different ways are possible if Sally must be in the middle?
Chapter8: Sequences, Series,and Probability
Section8.6: Counting Principles
Problem 40E: Choosing Officers From a pool of 12 candidates, the offices of president, vice-president, secretary,...
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topic: permutation/combination
there are seven children to be lined up in a straight line for a photograph
a. how many different ways are possible?
b. how many different ways are possible if Sally must be in the middle?
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