permutation question

Asked by Kirandoon | 15th Jan, 2009, 05:59: PM

Expert Answer:

since the alphabets comes in the start and we have two of them so they can be arranged in 2 ways.

now four digits can be arranged in (4!) ways.

so total no. of plates that can be made without duplication = 2*(4!)

Answered by  | 22nd Jan, 2009, 10:12: AM

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