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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
π is ______
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A complex number
A rational number
A natural number
An irrational number
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Question # 2
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Question # 3
The square matrix A is skew-symmetric when At =
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-B
-C
-A
-D
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Question # 4
3x + 4
>
0 is
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equation
inequality
identity
none of these
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Question # 5
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A rational number
A natural number
An irrational number
An integer
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Question # 6
If P is a proposition then its negative is denoted by
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Question # 7
if a
1
=3, d=7 and a
n
=59 , then the number of terms in A.P is
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7
9
11
13
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Question # 8
The set of real roots of the equation log
(5x + 4)
(2x +3)
3
- log
(2x + 3)
(10x
2
+ 23x + 12) = 1 is
Choose an answer
{-1}
{-3/5}
Empty set
{-1/3}
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Question # 9
If distance between (3,b) and (0,0) is 3 then b = _______
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3
9
0
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Question # 10
The range of inequality x + 2 > 4 is
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(-1, 2)
(-2, 2)
(1,
∞
)
None
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Question # 11
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1
0
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Question # 12
If f (x) is defined and continuous then f (x) is always
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Rational function
Trigonometric function
Logarithmic function
All are correct
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Question # 13
The third term of a G.P. is 4, The product of first five terms is
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43
45
46
None of these
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Question # 14
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Question # 15
Four cards are drawn at random from a pack of 52 playing cards. The probability of getting all the four cars of the same suit is
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44/4165
22/4165
11/4165
None of these
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Question # 16
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perpendicular vectors
concurrent vectors
parallel vectors
none of these
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Question # 17
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2 x 2
2 x 3
3 x 2
3 x 3
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Question # 18
If nis positive integers, then 2
n
>2n+1, only when
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n≤ 3
n≥ 3
n≤ 2
n≤ 1
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Question # 19
The solution of differential equation:
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dy/dx+y/x = x
2
is :
4xy = x
4
+ c
4x = x
4
= c
4 y = x
4
+ c
4x=4x
3
+ c
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Question # 20
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Question # 21
The proposition S(k+1) is true when ______ is true∀K∈N
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S(n)
S(k)
S(1)
S(k-1)
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Question # 22
n(n - 1) (n - 2) .... (n - r + 1) = ______
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Question # 23
The nth term of an A.P is (3n+5) Its 75th term is
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26
7
21
Cannot be determined
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Question # 24
If A and B are skew-symmetric then (AB)t is
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At Bt
AB
-AB
BA
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Question # 25
A and B be two square matrices and if their inverse exist the (AB)-1 =
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A-1 B-1
AB-1
A-1B
B-1A-1
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Question # 26
If 4 > b or a < b than a = b is a
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Additive property
Transitive property
Trichotomy property of inequality
None of above
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Question # 27
Choose an answer
n(A)
n(B)
0
1
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Question # 28
If we have a statement "if p then q" then q is called
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Conclusion
Implication
Unknown
Hypothesis
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Question # 29
A - B = ______
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Question # 30
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Reciprocal equation
Exponential equation
Radical equation
None of these
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Question # 31
The differential equation representing the family of curves y = A cos (x + B), where A, B are parameters, is
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