how many ways a motor bike number can be made is numbers are from 1 to 18.(no number will be repeated)

• for 4-digit number
  1-way, 9p2 when 10,11,12,13,14,15,16,17,18 are selected
  2-way, 9p4 when 1,2,3,4,5,6,7,8,9 are selected
  3-way, when any two of 1,2,3,4,5,6,7,8,9 are selected or any one of 10,11,12,13,14,15,16,17,18 are selected = 9p2*9p1*2
  so,9p2+9p4+9p2*9p1*2 = 4392
• 10 years agoHelpfull: Yes(32) No(3)
• a motor bike number is of 4 digits ..1st no can be choosen in 18c1 ways
  2nd no -17c1
  3rd no -16c1
  4rth no-15c1
  now thes 4 nos can be arranged in 4! ways so ans is
  18*17*16*15*4!
• 10 years agoHelpfull: Yes(5) No(3)
• the number plate consists of how many digits?
  
• 10 years agoHelpfull: Yes(3) No(0)
• 18*17*16*15=73440
• 10 years agoHelpfull: Yes(2) No(0)
• @AK 9p2*9p1*2 is not correct it should be 9c1*9c2*3!
• 10 years agoHelpfull: Yes(2) No(0)
• 9*8*7*6*5*4*3*2*1=362880
• 10 years agoHelpfull: Yes(1) No(1)
• consist of 4 digits.. i thnk ans wil be 10c4
• 10 years agoHelpfull: Yes(1) No(0)
• mr.AK can you explain why 2 is multiplie
• 10 years agoHelpfull: Yes(1) No(0)
• 9*8*7*6*5*4=60480
• 10 years agoHelpfull: Yes(0) No(0)
• total 4 digit
  so in each digit we can form 18 ways so 18*17*16*15=73440ways we can create
• 10 years agoHelpfull: Yes(0) No(0)