NAT IIP Physical Science Mathematics Preparation Online Test for Pakistani Students

If the sum of the roots of the equation ax²- 2x + 2a = 0 is equal to their product, then the value of a is

• 1 A
• 2 B
• 3 C
• 4 D

• 
  A
• 
  B
• 
  C
• -2-i D

• 
  A
• 
  B
• 
  C
• None D

If the 19th term of A.P is 8 and the 4th term is 20, then the first term is

• 20.2 A
• 25.5 B
• 27.5 C
• 37.5 D

A line segment whose end points lie on a circle is called

• The secant of the circle A
• The arc of the circle B
• The chord of the circle C
• The circumference of the circle D

• 2 A
• 1 B
• 3 C
• 4 D

The number ways in which 5 distinct toys can be distributed among 3 children is

• 3⁵ A
• 5³ B
• C₃⁵ C
• P₃⁵ D

• 1/2 A
• 3/5 B
• 4/5 C
• 1 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

Unit vector in the positive direction of x-axis is

• 
  A
• 
  B
• 
  C
• All D

The range of inequality x + 2 > 4 is

• (-1, 2) A
• (-2, 2) B
• 
  C
• None D

Two natural numbers whose sum is 25 and difference is 5, are

• 25, 20 A
• 20, 10 B
• 20, 5 C
• 15, 10 D

The set {{a,b}} is

• Infinite set A
• Singleton set B
• Two points set C
• None D

If Z = (1,2), then Z^-1= ?

• (0.2, 0.4) A
• (-0.2, 0.4) B
• (0.2 , -0.4) C
• (-0.2, -0.4) D