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प्रश्न
Answer the following:
30 objects are to be divided in three groups containing 7, 10, 13 objects. Find the number of distinct ways for doing so.
उत्तर
Required number = 30C7 × 23C10 × 13C13
= `(30!)/(23!7!) xx (23!)/(10!13!) xx1`
= `(30!)/(7!10!13!)`
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