- I am a 4 digit number.
- All of my digits are odd.
- All of my digits are different.
- My thousands digit is the smallest counting number.
- I am not divisible by 5.
- My tens digit is less than my units digit or my hundreds digit.
- The sum of my first and last digits equals the sum of my middle digits.
- I am less than 40 x 40.
Who am I?
Answer: I am 1537.