25) How many RAM chips of size (256K x 1 bit) are required to build 1M Byte memory

26) If each address space represents one byte of storage space, how many address lines are needed to access RAM chips arranged in a 4 x 6 array, where each chip is 8K x 4 bits

27) Four memory chips of 16 x 4 size have their address bases connected together. The system will be of size

28) How many addresses are required for 25 x 40 video RAM

29) Which of the following statements is true ?