Exactly 5 letters be placed into corresponding envelopes?
Explanation:
For exactly five letters to be placed in corresponding envelope 1 letter must go in wrong envelope. This is not possible.
This question is same as the previous question.
Hence, 0.
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.