Answer:
last three questions are statistical question
Answer:
9
Step-by-step explanation:
H=1/2 * B
N=H-5= 1/2 * B-5
B+H+N= B+(1/2 *B) + (1/2 *B-5)=31
2B-5=31
B=18
H=1/2 *B=9
Answer: A. 
Step-by-step explanation:
Given : A certain CD-ROM disk can store approximately
megabytes of information.
1 megabyte =
bytes
Then, The storage capacity of CD-ROM disk will be :
If an average word requires 14 bytes of storage, then the number of words can be stored :-

Hence, number of words can be stored = 