abcd is a 4 digit nbr if we multiply it by 9 then it reverse it position i.e., dcba
[abcd*9=dcba]
can any tell what is the answer and a!=b!=c!=d

• This question is not correct as due to given condition a!=b!=c!=d
  because value of d cant be greater than 9 so it means factorial not more than 3 as we require four digit number otherwise it will become 5digit number
  proof
  let a=1
  abcd=1111 dcba=1111 incorrect
  let a=2 than
  abcd 2222 dcba= 2222 incorrect
  let a=3
  abcd 3336 dcba = 6333
  multiply abcd by 9
  it will be 30024 incorrect
  if a=4
  so abcd 44412 not possible
• 6 years agoHelpfull: Yes(2) No(0)
• the number is 1089. 1089*9=9801
• 6 years agoHelpfull: Yes(0) No(2)