(6) अलग-अलग फोल्डरों को एक कतार में रखना है, पर एक विशेष फोल्डर हमेशा अंतिम स्थान पर रहेगा। कितने तरीके होंगे?

(6) different folders are to be arranged in a row, but one special folder always remains in the last position. How many ways are possible?

Explanation opens after your attempt
Correct Answer

D. (120)

Step 1

Concept

The last position is fixed and the remaining (5) folders can be arranged in (5!=120) ways. Arrange the remaining items after fixing the item.

Step 2

Why this answer is correct

The correct answer is D. (120). The last position is fixed and the remaining (5) folders can be arranged in (5!=120) ways. Arrange the remaining items after fixing the item.

Step 3

Exam Tip

अंतिम स्थान निश्चित है और शेष (5) फोल्डर (5!=120) तरीकों से लगेंगे। fixed item के बाद बचे items व्यवस्थित करें।

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Mathematics Answer, Explanation and Revision Hints

(6) अलग-अलग फोल्डरों को एक कतार में रखना है, पर एक विशेष फोल्डर हमेशा अंतिम स्थान पर रहेगा। कितने तरीके होंगे? / (6) different folders are to be arranged in a row, but one special folder always remains in the last position. How many ways are possible?

Correct Answer: D. (120). Explanation: अंतिम स्थान निश्चित है और शेष (5) फोल्डर (5!=120) तरीकों से लगेंगे। fixed item के बाद बचे items व्यवस्थित करें। / The last position is fixed and the remaining (5) folders can be arranged in (5!=120) ways. Arrange the remaining items after fixing the item.

Which concept should I revise for this Mathematics MCQ?

The last position is fixed and the remaining (5) folders can be arranged in (5!=120) ways. Arrange the remaining items after fixing the item.

What exam hint can help solve this Mathematics question?

अंतिम स्थान निश्चित है और शेष (5) फोल्डर (5!=120) तरीकों से लगेंगे। fixed item के बाद बचे items व्यवस्थित करें।