Mathematics, 17.02.2020 22:43 susannaking5742
"There are 15 questions on an exam. In how many ways can the exam be answered with exactly 8 answers correct?"
Answers: 3
is the number of different combinations of x objects from a set of n elements, given by the following formula.
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"There are 15 questions on an exam. In how many ways can the exam be answered with exactly 8 answers...
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