NAT IIP Physical Science Mathematics Preparation Online Test for Pakistani Students

The multiplicative inverse of -1 in the set {1-, 1} is

• 1 A
• -1 B
• +1 C
• 0 D

The length of rectangle is twice as much as its breadth. If the perimeter is 120 cm, the length of the rectangle is

• 10 cm A
• 20 cm B
• 30 cm C
• 40 cm D

If any two rows (or any two columns) of a square matrix are inter changed, the determinant of the resultant matrix is

• Same as the original determinant A
• Additive inverse of the original determinant
  B
• Both A and B C
• Adj of the original matrix D

• 
  A
• 
  B
• 
  C
• 
  D

• 2 A
• 1 B
• 0 C
• 
  D

If ab > 0 and a < 0, which of the following is negative?

• b A
• -b B
• -a C
• (a - b)² D

• 0 A
• -2 B
• 1 C
• 4 D

What is the period of Cot x?

• 
  A
• 
  B
• 
  C
• 
  D

The number of ways in which we can courier 5 packets to 10 cities is

• 2 x 5⁰ A
• 5¹⁰ B
• 10⁵ C
• 2¹⁰ D

Write the first four terms of the arithmetic sequence if a₁= 5 and other three consecutive terms are 23,26,29

• 23, 26, 29, 32 A
• 5, 8, 11, 14 B
• 8, 11, 14, 17 C
• None of these D

The nth term of of A.P:1,5,9,15,....................... is given by

• 4n - 3 A
• 4n + 1 B
• 3n - 4 C
• 4n + 3 D

• 2 A
• 1 B
• 3 C
• 4 D

In the expansion of (a + b)ⁿin every term the sum of the exponents of a and b is

• n A
• n + 1 B
• 2n - 1 C
• 2n + 1 D

Which of the following is the subset of all sets?

• 
  A
• {1, 2,3} B
• 
  C
• {0} D

The value of x, and y, when (x + iy)²= 5 + 4i

• X = 2, y = -1 A
• X = -2, y = 1 B
• X = 2, y = -1 C
• X = 2, y = 2 D