ECAT Pre General Science MCQ Test With Answer for Mathematics Chapter 2

Z is a

• Infinite set A
• Finite set B
• Singleton set C
• Set of all integers D

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

• 1 A
• -1 B
• 0 C
• Does not exist D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

The set {{a,b}} is

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

If A=B, then

• A⊂B and B⊂A A
• A⊆B and B⊈A B
• A⊆B and B⊆A C
• None of these D

• a-b=ab A
• ab=a B
• a+b=ab C
• 
  D

The number of different ways of describing a set is

• One A
• Two B
• Three C
• Four D

For any set B,B∪B' is

• Is set B A
• Set B' B
• Universal set C

• An empty set A
• Universal set B
• A singleton set C
• None of these D

• A is proper subset of B A
• A is an improper subset of B B
• A is equivalent to B C
• B is subset of A D

The set of natural is a semi group w.r.t

• Addition A
• Division B
• Subtraction C
• None of these D

The statement that a group can have more than one identity elements is

• True A
• False B
• Ambiguous C
• Some times true D

• A = B A
• B = C B
• A = C C
• None of these D

Group of none-singular matrices under multiplication is

• None-Abelian group A
• Semi group B
• Abelian group C
• None of these D

• Biconditional A
• Implication B
• Antecedent C
• Hypothesis D

For any set B, BUB' is

• Is set B A
• Set B' B
• Universal set C
• None of these D

If D = {a} , the P(D) =

• {a} A

• ∅

  B
• {∅,{a}} C
• {∅,a} 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

{x|x∈R∧x≠x} is a

• Infinite set A
• Null set B
• Finite set C
• None of these D

A conjunction of two statement p and q is true only if

• p is true A
• q is true B
• Both p and q are true C
• both p and q are false D

The graph of a quadratic function is

• Circle A
• Straight line B
• Parabola C
• Triangle D

• A A
• A' B
• U C
• U' D

The set {1,-1,i,-i}

• Form a group w.r.t addition A
• Form a group w.r.t multiplication B
• Does not form a group w.r.t multiplication C
• Not closed under multiplication D

The set {Z\ {0} } is group w.r.t

• Addition A
• Multiplication B
• Division C
• Subtraction D

The statement that a group can have more than one identity elements is

• True A
• False B
• Fallacious C
• Some times true D

If A ⊆ B then A ∪ B is

• A A
• B B
• A' C
• A ∩B D

The set of the first elements of the ordered pairs forming a relation is called its

• Function on B A
• Range B
• Domain C
• A into B D

• a constant function A
• linear function B
• quadratic funtion C
• none of these D