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Ten identical pens are given to 4 students; a student may get no pen. In how many ways can the pens be given?

Competition practicePermutations & Combinations
  • A220
  • B84
  • C10000
  • D286

Step-by-Step Solution

Stars and bars: 10 pens and 3 dividers in a row, is the count when everyone must get at least one.)
Answer: D) 286

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