754 single precision 1-bit sign 8-bit exponent 23-bit fraction, What is the binary representation of 0.25*2^(-128)? : 754 single precision 1-bit sign 8-bit exponent 23-bit fraction, What is the binary representation of 0.25*2^(-128)=2^(-130)? by using the formula: **exponent-bias=log(given number)** and also **fraction=-1+(given number)/2^(exponent-bias)** doesn't give the right answer....why? And how to solve this question?