(4) अलग-अलग डिब्बों पर (4) अलग-अलग लेबल चिपकाने के तरीके कितने हैं?
In how many ways can (4) different labels be pasted on (4) different boxes?
Explanation opens after your attempt
B. (24)
Concept
(4) different labels can be pasted on (4) different boxes in (4!=24) ways. Factorial is useful in matching arrangements.
Why this answer is correct
The correct answer is B. (24). (4) different labels can be pasted on (4) different boxes in (4!=24) ways. Factorial is useful in matching arrangements.
Exam Tip
(4) अलग लेबल (4) अलग डिब्बों पर (4!=24) तरीकों से लगेंगे। matching arrangements में factorial काम आता है।
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