A group of 28 people need to take an elevator to the top floor. The elevator can fit seven. How many ways can they chose a group of 7 to ride the elevator on the first time? 1,213,060 7,104,240 592,020 1,184,040
Added by Christine G.
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This can be done using the combination formula, which is given by: C(n, r) = n! / (r!(n-r)!) where n is the total number of people and r is the number of people we want to choose. In this case, n = 28 and r = 7. Plugging these values into the formula, we Show more…
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