QUESTION 4 A machine stores floating point number in a 9-bit word. The first bit is for the sign of the number, the second bit is for the sign of the exponent, the next 3 bits are for the exponent, and the final 4 bits are for the mantissa. The number that (010100000)z represents in the above given 9-bit format is QUESTION 5 What is the smallest positive number that can be stored using 7 bits, where the 1st bit is used for the sign of the number; the 2nd bit for sign of the exponent 2 bits for mantissa, and the rest QUESTION 6 A machine stores floating point number in a (1 1+2+ 4)-bit word. The first bit is for the sign of the number, the second bit is for the sign of the exponent, the next 2 bits are for the exponent, and the final 4 bits are for the mantissa. The largest positive number that can be represented is (Keep 4 decimal places.)