How many 5 digit integers are there in which each digit is greater than the digit on it's right?

• answer will be 144.since in unit place we can place six digits
  (0,1,2,3,4,5)in tens place we can place 4 digits(6,7,8,9),similarly we can place 3,2 digits in hundreth and thousand place respectively.finally we can place 1 digit at final place,so answer will be(6*4*3*2*1=144)
• 11 years agoHelpfull: Yes(5) No(5)
• 252
  
  Each set of 5 digits from available 10 digits can be arranged in one way only.
  so possible sets are 10C5 = 252
• 11 years agoHelpfull: Yes(5) No(1)
• some thing is missing in the question isn't it?
• 11 years agoHelpfull: Yes(2) No(0)
• 6
  no's are 98765,87654,76543,65432,54321,43210
  
• 11 years agoHelpfull: Yes(0) No(5)
• I think given data is not sufficient
• 11 years agoHelpfull: Yes(0) No(0)