(4) उपन्यास, (3) कविता और (5) नाटक पुस्तकों में से (5) पुस्तकें चुनकर पंक्ति में सजानी हैं। चयन में ठीक (2) कविता पुस्तकें और कम से कम (1) उपन्यास हो। कुल कितनी व्यवस्थाएँ होंगी?

From (4) novels, (3) poetry books, and (5) drama books, (5) books are to be selected and arranged in a row. The selection must have exactly (2) poetry books and at least (1) novel. How many arrangements are possible?

Author: Muft Shiksha Editorial Team Published: Updated:
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Correct Answer

C. (26640)

Explanation

Simple Explanation

पहले ठीक (2) कविता पुस्तकें चुनें, फिर बाकी (3) पुस्तकें उपन्यास-नाटक से कम से कम (1) उपन्यास सहित चुनें। चयन के बाद (5!) क्रम लगाएँ। / First choose exactly (2) poetry books, then choose the remaining (3) books from novels and dramas with at least (1) novel. After selection, arrange in (5!) ways.

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Mathematics Answer, Explanation and Revision Hints

(4) उपन्यास, (3) कविता और (5) नाटक पुस्तकों में से (5) पुस्तकें चुनकर पंक्ति में सजानी हैं। चयन में ठीक (2) कविता पुस्तकें और कम से कम (1) उपन्यास हो। कुल कितनी व्यवस्थाएँ होंगी? / From (4) novels, (3) poetry books, and (5) drama books, (5) books are to be selected and arranged in a row. The selection must have exactly (2) poetry books and at least (1) novel. How many arrangements are possible?

Correct Answer: C. (26640). Explanation: पहले ठीक (2) कविता पुस्तकें चुनें, फिर बाकी (3) पुस्तकें उपन्यास-नाटक से कम से कम (1) उपन्यास सहित चुनें। चयन के बाद (5!) क्रम लगाएँ। / First choose exactly (2) poetry books, then choose the remaining (3) books from novels and dramas with at least (1) novel. After selection, arrange in (5!) ways.