DIFFICULT QUESTIONS:

Question 1:

Binary bits work in powers of 2:

The numbers 75-100 are more than 2^6 (which is 64). Therefore 7 bits are needed to store this data:

Answer C: 7

Question 24:

1001 0011 + 0000 0001 --> 1001 0012 --> 1001 0020 --> 1001 0100

(Every time a 1 is added to a bit that is already 1, the bit switches to 0 and 1 is added to the bit before it)

Answer: A: 1001 0100

Question 25:

11101 --> 11101000

000 is 3 bits, and 2^3 is 8.. therefore multiplied by 8

Answer: C: the transformed number is 8 times the value of the original number