Which one of the following is the most appropriate logical formula to represent the statement
“Gold and Silver ornaments are precious”
The following notations are used:
G(x): x is a gold ornament
S(x): x is a silver ornament
P(x): x is precious

**A. ** ∀x(P(x →(G(x ∧S(x )))

**B. ** ∀x((G(x ∧S(x →P(x ))

**C. ** ∃x((G(x ∧S(x →P(x ))

**D. ** ∀x((G(x ∨S(x →P(x ))

**Answer : ****Option D**

**Explaination / Solution: **

No Explaination.

No Explaination.

Workspace

Report

The binary operation ∨ is defined as follows ;

**A. ** ~Q Λ ~P

**B. ** P ν ~Q

**C. ** ~P Λ Q

**D. ** ~P ν ~Q

**Answer : ****Option B**

**Explaination / Solution: **

No Explaination.

Which one of the following is equivalent to P∨Q?

No Explaination.

Workspace

Report

evaluates to

**A. ** 0

**B. ** 1

**C. ** In 2

**D. ** 1/2 In 2

**Answer : ****Option D**

**Explaination / Solution: **

No Explaination.

No Explaination.

Workspace

Report

Consider the following well-formed formulae:

**A. ** i and iii

**B. ** i and iv

**C. ** ii and iii

**D. ** ii and iv

**Answer : ****Option B**

**Explaination / Solution: **

No Explaination.

Which of the above are equivalent?

No Explaination.

Workspace

Report

Consider n disk system with 100 cylinders. The requests to access the cylinders occur in the following
sequence:4, 34, 10, 7, 19, 73, 2, 15, 6, 20
Assuming that the head is currently at cylinder 50, what is the time taken to satisfy all requests if it
takes 1 ms to move from one cylinder to adjacent one and shortest seek time first policy is used?

**A. ** 95 ms

**B. ** 119 ms

**C. ** 233 ms

**D. ** 276 ms

**Answer : ****Option B**

**Explaination / Solution: **

No Explaination.

No Explaination.

Workspace

Report

A hard disk has 63 sectors per track, 10 platters each with 2 recording surfaces and 1000 cylinders. The address of a sector is given as a triple〈c, h, s〉, where c is the cylinder number, h is the surface number and s is the sector number. Thus, the 0^{th} sector is addressed as 〈 0, 0, 0〉 , the 1^{st} sector as 〈 0, 0, 1〉 and so on.

The address 〈400, 16, 29〉 corresponds to sector number:

No Explaination.

Workspace

Report

A hard disk has 63 sectors per track, 10 platters each with 2 recording surfaces and 1000 cylinders. The address of a sector is given as a triple〈c, h, s〉, where c is the cylinder number, h is the surface number and s is the sector number. Thus, the 0th sector is addressed as 〈 0, 0, 0〉 , the 1st sector as 〈 0, 0, 1〉 and so on.

The address of 1039No Explaination.

Workspace

Report