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Write the word or phrase that best completes each statement or answers the question.
Provide the missing information.
-Suppose that n represents the number of distinct elements in a group from which r elements will be
chosen in a particular order. Then each arrangement is called a________ of n items taken ________ at atime.
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Q50: <span class="ql-formula" data-value="6 x = \frac {
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Q90: <span class="ql-formula" data-value="a _ { 1 }
Q100: <span class="ql-formula" data-value="\frac { 9 x ^
Q121: Find -5A - 4B. <span
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