Score 2. (Each question Score 4, Total Score 20) Fill your answers in the "C (1) [26.125 ]10 )" 16 (2) The 31 base synchronous counter has at least ( ) count outputs. (3) The binary number code is (1110101)2, then its corresponding Gray code is ( ). (4) If F = A + B' (C+D' E), then dual expression FD =( (5) A modulo-24 counter circuit needs ( ) D filp-flops at least.