it is a three digit

whose ten digit is 3
its hundred digit is 4 more than its one digit, which is an odd number less than 5

no two digits are the same

I need help on how to do this. too many years for mommy

if the digits are h,t,u for hundreds, tens, units, then the number is

hdu

Now, just start using the given info:

tens digit is 3, so

hdu = h3u

the ones digit is odd and less than 5. There are only two such numbers: 1 and 3. But 3 is already used, so

hdu = h31

Now, hundreds is 4 more than ones, so

hdu = 531