CDS I 2017 Elementary Mathematics Previous Year Paper (05-Feb-2017)

Question 1

What is $\sqrt {\frac{{0.064{\rm{\;}} \times {\rm{\;}}6.25}}{{0.081{\rm{\;}} \times {\rm{\;}}4.84}}} {\rm{\;}}$ equal to?

Accepted Answer

100/99

Answer

10/99

Answer

9

Answer

99

Question 2

(x + 4) is a factor of which one of the following expressions?

Accepted Answer

x 2&ndash; 7x &ndash; 44

Answer

x 2&ndash; 7x + 44

Answer

x 2+ 7x &ndash; 44

Answer

x 2+ 7x + 44

Question 3

If &alpha; and &beta; are the roots of the quadratic equation 2x 2+ 6x + k = 0, where k < 0, then what is the maximum value of (&alpha;/&beta; + &beta;/&alpha;)?

Accepted Answer

-2

Answer

2

Answer

9

Answer

-9

Question 4

Consider the following sentences:1. If a = bc with HCF(b, c) = 1, then HCF(c, bd) = HCF(c, d).2. If a = bc with HCF(b, c) = 1, then LCM(a, d) = LCM(c, bd).Which of the above statements is/are correct?

Accepted Answer

1 only

Answer

2 only

Answer

Both 1 and 2

Answer

Neither 1 nor 2

Question 5

What is the square root of $\frac{{{{\left( {0.35} \right)}^2} + {\rm{\;}}0.70{\rm{\;}} + {\rm{\;}}1}}{{2.25}} + 0.19{\rm{\;}}?$

Accepted Answer

1

Answer

2

Answer

3

Answer

4

CDS I 2017 Elementary Mathematics Previous Year Paper (05-Feb-2017)

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