(5) अलग-अलग गणित और (4) अलग-अलग भौतिकी पुस्तकों को शेल्फ पर रखना है। कोई दो भौतिकी पुस्तकें साथ न हों, तो व्यवस्थाओं की संख्या कितनी है?
(5) distinct mathematics books and (4) distinct physics books are arranged on a shelf. If no two physics books are together, how many arrangements are possible?
Explanation opens after your attempt
A. (86400)
Concept
Arrange the (5) mathematics books in (5!) ways, then place the (4) physics books in \(^{6}P_{4}\) gaps. Exam tip: gaps are the safest method for no two together.
Why this answer is correct
The correct answer is A. (86400). Arrange the (5) mathematics books in (5!) ways, then place the (4) physics books in \(^{6}P_{4}\) gaps. Exam tip: gaps are the safest method for no two together.
Exam Tip
पहले (5) गणित पुस्तकें (5!) तरीकों से रखें, फिर (6) gaps में (4) भौतिकी पुस्तकें \(^{6}P_{4}\) तरीकों से रखें। परीक्षा में no two together के लिए gaps सबसे सुरक्षित तरीका है।
Login to save your score, XP, coins and progress.
