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The number of permutations of n different objects taken r at a time, with no repetition, is written as:
AnTr
BnPr
CnQr
DnSr
Answer & Solution
Correct answer: B. nPr
1. The count runs from n down for r terms.
2. A special symbol stands for it.
3. It is written nPr.
_Source: NCERT Class 11 Mathematics, Chapter 7, Permutations and Combinations._
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