272) If 7 bits are used to store a character, the percentage reduction of needed storage will be

273) How many bits are absolutely necessary to store an ASCII character ?

274) a << 1 is equivalent to

275) Assume an unsigned integer occupies 1 byte. Let myVar be an unsigned integer. Then myVar « 1 multiplies myVar by 2 if it is not greater than

276) In a certain machine, the sum of an integer and its 1's complement is 226 - 1. Then sizeof intl. in bits, will be