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Exam Details

2018 Elementary Mathematics

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Questions 100
Duration 180 mins
Package Combined Defence Services Examination (I) - Previous Year Papers

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Difficulty distribution

Easy 34 34%
Medium 33 33%
Hard 33 33%

Question type distribution

Multiple Choices 100 100%

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Sample questions from this paper

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1
2018 · Unclassified
2018 Elementary Mathematics
5¹7 + 5¹8 + 5¹9 + 5²0 is divisible by
A
7
B
9
C
11
D
13
2
2018 · Unclassified
2018 Elementary Mathematics
If a + b = 2c, then what is the value of \( a/a-c + c/b-c \) ?
A
-1
B
0
C
1
D
2
3
2018 · Unclassified
2018 Elementary Mathematics
If x = y^{1/a}, y = z^{1/b} and z = x^{1/c} where x \neq 1, y \neq 1, z \neq 1, then what is the value of abc ?
A
-1
B
1
C
0
D
3
4
2018 · Unclassified
2018 Elementary Mathematics
If 2b = a + c and y² = xz, then what is x^{b-c} y^{c-a} z^{a-b} equal to ?
A
3
B
2
C
1
D
-1
5
2018 · Unclassified
2018 Elementary Mathematics
Which one of the following is correct ?
A
Decimal expansion of a rational number is terminating.
B
Decimal expansion of a rational number is non-terminating.
C
Decimal expansion of an irrational number is terminating.
D
Decimal expansion of an irrational number is non-terminating and non-repeating.
6
2018 · Unclassified
2018 Elementary Mathematics
If the roots of the equation px² + x + r = 0 are reciprocal to each other, then which one of the following is correct ?
A
p = 2r
B
p = r
C
2p = r
D
p = 4r