(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
D. (120)
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.
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.
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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