I am a 4-didit number. All my digits are odd numbers and each digit is different. The sum of the tensdigit and hundreds digit is 6. All 4 digits add to 16. Who am I?
There's not enough information given.
It's either
__ 1 5 __
or
___ 5 1 ___
The ones and thousands digits add up to 10. Therefore they must be 7 and 3.