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Question

Q. In how many ways can 4 women fill water into 4 different bottles if no bottle can be filled more than once?

Q. यदि कोई बोतल एक से अधिक बार नहीं भरी जा सकती हैं तो 4 महिलाएं 4 अलग-अलग बोतलों में कितने तरीके से पानी भर सकती हैं?

A
4
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B
16
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C
24
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D
64
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Solution

The correct option is C 24
1st woman can fill water into any of the 4 bottles.
2nd woman can fill water into any of the remaining 3 bottles.
Similarly, 2 and 1 bottle for the 3rd and 4th woman respectively.
Thus, the total number of ways =4×3×2×1=24 ways

पहली महिला 4 बोतलों में से किसी में पानी भर सकती है।

दूसरी महिला शेष 3 बोतलों में से किसी में पानी भर सकती है।
इसी तरह, तीसरी और चौथी महिला के लिए क्रमशः 2 और 1 बोतल।
इस प्रकार, तरीकों की कुल संख्या =4×3×2×1=24

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A+B+C=N (N Fixed)
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