In this article we are taking most refined sample questions that are taken from math section of CDSÂ question paper and presenting it to you, so have a look and see if you are comfortable in solving these kind of questions then only you have any chance of clearing the CDSÂ exam.
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CDS 2 2017 Elementary Mathematics Exam Important Questions
1. If the roots of the equation are in the ration p:q, then is equal to | ||
a. 0 | ||
b. 1 | ||
c. 2 | ||
d. 3 | ||
Answer. a |
2. | ||
a. -15 | ||
b. -5 | ||
c. 0 | ||
d. 5 | ||
Answer. c |
3. | ||
a. | ||
b. | ||
c. | ||
d. | ||
Answer. c |
4. | ||
a. a+b+c | ||
b. 3 | ||
c. 1 | ||
d. 0 | ||
Answer. c |
5. | ||
a. p-q = 0 | ||
b. p+q-2 = 0 | ||
c. p+q-1 = 0 | ||
d. p-q-1 = 0 | ||
Answer. d |
6. | ||
a. 0 | ||
b. 1 | ||
c. 2 | ||
d. 3 | ||
Answer. a |
7. The sum and difference of two expression are and respectively. The HCF of two expressions will be | ||
a. (x+1) | ||
b. (x-1) | ||
c. (3x+7) | ||
d. (2x-3) | ||
Answer. b |
8. If (s-a)+(s-b)+(s-c) = s, then the value of will be | ||
a. 3 | ||
b. 1 | ||
c. 0 | ||
d. -1 | ||
Answer. b |
9. Â | ||
a. 1 | ||
b. 9 | ||
c. 10 | ||
d. 13 | ||
Answer. c |
10. Let p and q be non-zero integers. Consider the polynomial A(x) = x^2 + px+q It is given that (x – m) and (x – km) are simple factors of A(x), where m is a non-zero integer and k is a positive integer, k ≥ 2. Which one of the following is correct? | ||
a. | ||
b. | ||
c. | ||
d. | ||
Answer. b |
11. Let m be a non-zero integer and n be a positive integer. Let R be the remainder obtained on dividing the polynomial X^n + M^n by (x-m). Then | ||
a. R is a non-zero even integer | ||
b. R is odd, if m is odd | ||
c. R = s^2 for some integer s, if it is even | ||
d. R = t^3 for some integer t, if 3 divides n | ||
Answer. c |
12. | ||
a. 7 | ||
b. 5 | ||
c. 3 | ||
d. 1 | ||
Answer. b |
13. if the linear factors of  are p and q, then p+q is equal to | ||
a. (x-1)(a+1) | ||
b. (x+1)(a+1) | ||
c. (x-1)(a-1) | ||
d. (x+1)(a-1) | ||
Answer. d |
14. If then is equal to (given that b≠0) | ||
a. 0 | ||
b. 1 | ||
c. ab | ||
d. 2ab | ||
Answer. a |
15. | ||
a. 7 | ||
b. 9 | ||
c. 11 | ||
d. 13 |
Thnks sr