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Six different storybooks are to be shared equally between two sisters, Diya and Nisha. In how many ways can this be done?

Competition practicePermutations & Combinations
  • A20
  • B10
  • C40
  • D720

Step-by-Step Solution

Choose Diya's 3 books: ; Nisha gets the rest. (10 would be for two unnamed, identical piles.)
Answer: A) 20

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