Mathematic F.1 (two question)indices and numeral systems

1. Find two possible 3-digit denary numbers such that each of them
can be converted into a 8 - digit binary number and a 2 - digit
hexadecimal number.
The max. value = 25610=111111112=FF16
: : :
The min. value = 12810=100000002=8016
2. Find two possible binary numbers which are divisible by both
6 and 8 when they are converted into denary numbers.
(any multiples of 24)
2410=110002
4810=1100002
7210=10010002
9610=11000002
..so on..