Синформатикой . 100(16)-10(8)-1(2)=? ()система счисления .заранее !

100 (16) =16² (10cc) =256 (10cc)
10 (8cc) =8 (10cc)
1 (2cc) =1 (10cc)

100 (16cc) -10 (8cc) -1 (2cc) = 256 -8-1= 247 (10cc)  <--- ответ
247 (10cc) =F7 (16cc)= 11110111 (2cc) =367 (8cc)