if all the number between 17 and 100 are written on a piece of p[aper, then how many times 4 will be used??

• 24,34,54,64,74,84,94+11
  
  =18
• 11 years agoHelpfull: Yes(8) No(3)
• its ans is 24,34,40,41,42,43,44,45,46,47,48,49,54,64,74,84,94
  ans is 18
• 11 years agoHelpfull: Yes(3) No(1)
• answer is 18
• 11 years agoHelpfull: Yes(1) No(2)
• it should be 17 not 18 can anyone explain how its 18??
  
• 11 years agoHelpfull: Yes(1) No(2)
• total 4 between
  40 to 49 = 10
  17 to 20 =0
  21 to (30 & 40 & 50 & 60 & 70 & 80 & 90) = 8
  
  so 10 + 8 =18
• 10 years agoHelpfull: Yes(0) No(0)