Questions

The given sentence is in simple present tense and states a general fact, hence the latter half of the sentence with the blank will also be in the simple present tense. Since the subject in the latter part of the sentence is singular .i.e. 'the number', the verb will be followed accordingly. Hence, option 4 is the correct answer.

Tennis rackets and ballpoint pens are two independent goods. Since, one doesn't depend on the other.

Maximum hard drive size for FAT16-based windows system is 2GB.

Saigon

Separation of an employee exists when the service of an employee comes to an end because of one reason or other. "Separation of employment" refers broadly to the process of managing the termination of employment. It is a sensitive issue for any organization. 

Types of separation:

1) Volunntary:

a) Resignation
b) Job abandonment
c) Retirement

2) Involuntary:

a) Layoff
b) Dismissal
c) Plant closure
d) Death or Disability.

Two complete events occurred rescue happened first hence it will be expressed in past perfect tense, ‘had rescued’ will be the correct usage.

Justice T.B.N Radhakrishnan is the first Chief Justice of the newly formed Telangana High Court.