Please answer the questions correctly and and show clear and easy explained detailed workings explaining steps. Please really make sure its correct.

16. If a float number is stored in one byte such that the first bit is the sign, the next three bit represent the exponent in excess-3 notation, and the last four bits represent the mantissa, then if the number is 3.25 then what is the bit pattern a. 00111101 b. 01011101 c. 00110110 d. 01011110 c. None of the above 17. A float number is stored in one byte where the first bit is the sign, the next three bit represent the exponent in excess-3 notation, and the last four bits represent the mantissa. Which bit pattern stores the number 3.25