Explore topic-wise MCQs in Discrete Mathematics.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Discrete Mathematics knowledge and support exam preparation. Choose a topic below to get started.

1.

If a1, a2, a3 .. are in AP then if a7 = 15, then the value of common difference that would make a2 a7 a12 greatest is?

A. 2
B. 0
C. 4
D. 9
Answer» C. 4
Discussion
2.

If a1, a2, a3 are in GP then 1/a1, 1/a2, 1/a3 are in ___________

A. AP
B. GP
C. HP
D. None of the mentioned
Answer» C. HP
Discussion
3.

If a1, a2, a3 are in airthemetic as well as geometric progression then which of the following is/are correct?

A. 2a<sub>2</sub> = a<sub>1</sub> + a<sub>3</sub>
B. a<sub>2</sub> = (a<sub>1</sub>a<sub>3</sub>)<sup>1/2</sup>
C. a<sub>2</sub> a<sub>1</sub> = a<sub>3</sub> -a<sub>2</sub>
D. All of the mentioned are correct
Answer» E.
Discussion
4.

If between two numbers which are root of given equation. x2 18x + 16 = 0, a GM is inserted then the value of that GM is?

A. 4
B. 5
C. 6
D. 16
Answer» B. 5
Discussion
5.

State whether the given statement is true or false.
AM GM.

A. True
B. False
Answer» C.
Discussion
6.

If one geometric mean G and two airthmetic mean A1, A2 are inserted between two numbers, then (2A1 A2) (2A2 A1) is equal to _______

A. 2G
B. G
C. G<sup>2</sup>
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
7.

If A and G be the A.M and G.M between two positive number then the numbers are A + (A2 G2)1/2, A (A2 G2)1/2.

A. True
B. False
Answer» B. False
Discussion
8.

The series a, (ab)1/2, b is in _______

A. AP
B. GP
C. HP
D. None of the mentioned
Answer» C. HP
Discussion
9.

Let A1, A2, be two AM s and G1, G2 be two GM s between a and b,then (A1 + A2) / G1G2 is equal to _______

A. (a+b) / 2ab
B. 2ab/(a+b)
C. (a+b)/(ab)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion