It has 2 digits
It is less than 10
The tenths digit is 1 more than the units digit
The digits add up to 7

The number is

It has 2 digits
It is more than 5
The units digit is more than double the tenths digit
The digits add up to 11
The units digit is even

The number is

It has 3 digits
It is less than 30
The tenths digit is equal to the sum of the tens digit and the units digit
It has odd and even digits
It is greater than 20
The units digit is half of 10

The number is

It has 4 digits
It is less than 100
One of the digits is an odd number
The hundredths digit is the sum of the tens and units digits
The tens digit is 3 times the units digit
The tens digit is two times the tenths digit

The number is