Tag Archives: sample math MCQ’s

Functions & Limits

QUESTION:

If f(x,y) = 3x + 2y and g(x,y) = x2 – y2 for all real numbers of x and y, then f(g(1,2)3) = ?

OPTIONS:

  • -8
  • -3
  • 9
  • 6

CORRECT ANSWER:

-3

EXPLANATION:

F(g(1,2)3) = 3(1-4) + 2(3) = -3

SAMPLE PHYSICS QUESTIONS

SAMPLE CHEMISTRY QUESTIONS

SAMPLE BIOLOGY QUESTIONS 

 

 


MATRICES & DETERMINANTS

QUESTION:

OPTIONS:

  • 0
  • 1
  • 100
  • -100

CORRECT OPTION:

0

EXPLANATION:

SAMPLE PHYSICS QUESTIONS

SAMPLE BIOLOGY QUESTIONS

SAMPLE CHEMISTRY QUESTIONS 

 


Sets & Functions

QUESTION:

The set of fourth roots of unity are closed with respect to?

OPTIONS:

  • Addition
  • Division
  • Subtraction
  • None of the above

CORRECT OPTION:

Division

EXPLANATION:

Set = {1,-1,i,-i}

Addition: 1 + i is not part of the set;

Subtraction: 1 – i is not part of the set;

Any division operation in the set results in an element which is part of the set. E.g. 1/i = i/i2 = -i. Hence it is closed w.r.t division;

Remember that set of fourth roots of unit are closed w.r.t multiplication and division.

SAMPLE PHYSICS QUESTIONS

SAMPLE CHEMISTRY QUESTIONS

SAMPLE BIOLOGY QUESTIONS