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CBSE Class 10 Answered

plzzz tell fast for tomorrow's boards
Asked by ashwinivg | 10 Mar, 2010, 08:46: PM
Expert Answer

There are only 4 ways, because one envelope corresponds to one letter.

But for any one letter selected there are 4 envelopes available, so we put it in any one.

For second letter now there are 3 envelopes available,

For third only two are available.

Total number of ways = 4x3x2 = 24

The same way of saying it is, 4!.

Regards,

Team,

TopperLearning.

Answered by | 10 Mar, 2010, 09:50: PM
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