Given 10 alphabets out of which 5 are to be chosen. How many words can be made with atleast one repetition.

• (10^5-10*9*8*7*6) words can be made with atleast one repetition.
  (10^5-10*9*8*7*6)= 10*(10000-3024)=10*6976= 69760 words
• 11 years agoHelpfull: Yes(9) No(8)
• number of ways to select 5 alphabets from 10 =10c5
  number of ways in which these 5 alphabets can be arranged =5^5
  without repetetion we get =5*4*3*2*1=120
  so answer is=10c5(5^5-120)
• 11 years agoHelpfull: Yes(8) No(2)
• (10^5-10!) words can be made with atleast one repetition.
• 11 years agoHelpfull: Yes(3) No(4)