(7) अलग-अलग पोस्टकार्डों को बाएँ से दाएँ सजाने के तरीके कितने हैं?
In how many ways can (7) different postcards be arranged from left to right?
Explanation opens after your attempt
C. (5040)
Concept
The left-to-right arrangement of (7) distinct postcards is (7!=5040). Use factorial in linear arrangement.
Why this answer is correct
The correct answer is C. (5040). The left-to-right arrangement of (7) distinct postcards is (7!=5040). Use factorial in linear arrangement.
Exam Tip
बाएँ से दाएँ (7) अलग पोस्टकार्डों की व्यवस्था (7!=5040) है। linear arrangement में factorial लें।
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