If x and y are two decimal digits and (0.1101)2 = (0.8xy5)10, the decimal value of x + y is ______

The format of the single-precision floating-point representation of a real number as per the IEEE 754 standard is as follows:

sign

exponent

mantissa

Which one of the following choices is correct with respect to the smallest normalized positive number represented using the standard?

In 16-bit 2's complement representation, the decimal number -28 is :

Consider Z = X - Y, where X, Y and Z are all in sign-magnitude form. X and Y are each represented in n bits. To avoid overflow, the representation of Z would require a minimum of: