Answers

2014-06-08T19:48:12+05:30
25P20 = 25!/(25-20)!
           = 25!/5!
           
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  • Brainly User
2014-06-08T21:02:49+05:30
Evaluate the following :



Solution :

             
  = 25! /(25-20)!
                         =25!/5!
                         =25*24*23*22*21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5!/5!
                         =25*24*23*22*21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*1
                         =1.292600836944249e+23

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