ECAT Pre Computer Science Mathematics MCQ Test With Answer for Full Book

If (x,y) are the coordinates of a point P, then the first number of the ordered pair is called:

• Ordinate A
• Abscissa B
• quadrant C
• Cartesian D

Period of 3 sin x is ______

• 
  A
• 
  B
• 
  C
• 
  D

Ifπ≤x≤2π, then cos-1 (cos x)=

• cos x A
• -x B
• 1/x C
• -x D

(A∪B)∪C= --------------------------

• A∩B(B∪C) A
• A∪(B∪C) B
• A∪(B∩C) C
• None of these D

Differentiating the equation e²x/x+1 with respect to X is given by

• (2x +1) e ²x/(x+1)² A
• 2xe^2x/(x+1)² B
• 2e^2x/(x+1)² C
• (x+1)e^2x/(x+1)² D

• 2 A
• -1 B
• 8 C
• not defined D

On simplifying the express in sin2O/1+Cos 2O the result is.

• Sin O A
• CotanO B
• Tan O C
• Sec O D

The set of complex numbers forms

• Commutative group w.r.t addition A
• Commutative group w.r.t multiplication B
• Commutative group w.r.t division C
• Non commutative group w.r.t addition D

In R, the multiplicative inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

Which of the following sets in infinite

• The set of students of your class A
• The set of all schools in Pakistan B
• The set of natural numbers between 3 and 10 C
• The set of rational numbers between 3 and 10 D

If 2 tan¹(cos x) = tan^-1(cosec²x), then x is equal to

• π/ 3 A
• π/ 2 B
• π/ 6 C
• π D

Matrix multiplication is

• Commutative A
• Not commutative B
• Not associative C
• Not distributive D

if a_{9 =19,a9=31 are the 6th and 9th term of an A.P. and d=4 is the common difference, then 18th term of the sequence is}

• 65 A
• 67 B
• 71 C
• 75 D

• 
  A
• 
  B
• 
  C
• 
  D

ax + by < c is linear inequality in

• four variables A
• three variables B
• two variables C
• one variable D

• 
  A
• 
  B
• 
  C
• 
  D

(A ∩ B)c =

• A∩ B A
• (A ∪ B)c B
• Ac∪Bc C
• Φ D

If the lower limit of an integral is a constant and the upper limit is a variable, then the integral is a

• Constant function A
• Variable value B
• Function of upper limit C
• All D

• injuctive as well as surjective A
• both onto and into B
• one - one and into C
• only (1 - 1) D

If A and B are two sets then intersection of A and B is denoted by

• 
  A
• 
  B
• 
  C
• 
  D

The set (Z, +) forms a group

• Forms a group w.r.t. addition A
• Non commutative group w.r.t. multiplication B
• Forms a group w.r.t multiplication C
• Doesn't form a group D

When rational fraction is separated into partial fractions, the result is

• an identity A
• A fraction B
• A partial sum C
• Improper fraction D

The number of subset of {0} is

• 1 A
• 2 B
• 3 C
• None D

If n is add the expansion (a + x)ⁿhas middle terms

• 2 A
• 3 B
• 4 C
• 5 D

It is not possible to find the exact value of

• π A
• √9 B
• ∛27 C
• √1 D

How many different 5-digit even numbers are possible form digit 1,2,4,6,8

• 4 : 4! A
• 4! B
• 5! C
• 4!+4! D

• 
  A
• 
  B
• 
  C
• 
  D

Let A,B, and C be any sets such that A∪B = A∪C and A∩B = A∩C then

• A≠ C A
• B = C B
• A = B C
• A≠ B D

• 
  A
• 
  B
• 
  C
• 
  D

The area under the curve y = 1/x² between x = 1 and x =4 is:

• -25 A
• 0.75 B
• -0.35 C
• -10 D