Explore topic-wise MCQs in Discrete Mathematics.

This section includes 13 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.

The given circuit can work if the switches P and Q be ___________

A. P: True, Q: False
B. P: True, Q: True
C. P: False, Q: False
D. All of the mentioned
Answer» E.
Discussion
2.

If in a for it to be complete it is necessary for switch A to be closed and either of switch B or C to be closed, then which can be true?

A. Switch A should in parallel with B and C is series to them
B. Switch A should be in series with a parallel circuit of B and C
C. All of the mentioned
D. None of the mentioned
Answer» C. All of the mentioned
Discussion
3.

The ten switches A,B,C,D,E,F,G,H,N,M are placed in the given circuit (all are open at given time). If you close one switch you need to pay 1 unit cost. What is the cost you need to pay to glow this Lamp?

A. 1 unit
B. 2 units
C. 3 units
D. 4 units
E. . If you close one switch you need to pay 1 unit cost. What is the cost you need to pay to glow this Lamp?a) 1 unitb) 2 unitsc) 3 unitsd) 4 units
Answer» B. 2 units
Discussion
4.

The circuit depend on which switch/switches state to be complete?

A. P
B. Q
C. Both P and Q
D. None of the mentioned
Answer» B. Q
Discussion
5.

If it is given that switch R is closed and Q is closed then lamp will glow if _________

A. P: Open, S: Closed
B. P: Open, S: Open
C. P: Closed, S: Closed
D. None of the mentioned
Answer» B. P: Open, S: Open
Discussion
6.

Which statement should be true in order for lamp to glow?

A. (R ∧ (~(P ∧ Q))
B. P∧R∧Q
C. P ∧ (Q ∧ ~R)
D. None of the mentioned
Answer» B. P∧R∧Q
Discussion
7.

In this circuit shown the lamp will be glowing if _________

A. P: True, Q: True, R: False
B. P: True, Q: True, R: True
C. P: False, Q: False, R: True
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
8.

In the circuit shown the lamp will be glowing if _________

A. P: True, Q: False
B. P: True, Q: True
C. P: False, Q: False
D. None of the mentioned
Answer» B. P: True, Q: True
Discussion
9.

If there are ‘M’ switches in parallel numbered from 1, 2, …, M. For circuit to be complete and bulb to glow which of the following is necessary

A. 1∧ 2∧ 3 ∧ … ∧M should be on
B. 1∧ 2∧ 3 ∧ … ∧M should be off
C. 1 v 2 v 3 v … v M should be on
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
10.

If there are ‘M’ switches in series numbered from 1, 2, …, M. For circuit to be complete and bulb to glow which of the following is necessary?

A. 1∧ 2∧ 3 ∧ … ∧M should be on
B. 1∧ 2∧ 3 ∧ … ∧M should be off
C. 1 v 2 v 3 v … v M should be on
D. None of the mentioned
Answer» B. 1∧ 2∧ 3 ∧ … ∧M should be off
Discussion
11.

IF_IN_A_FOR_IT_TO_BE_COMPLETE_IT_IS_NECESSARY_FOR_SWITCH_A_TO_BE_CLOSED_AND_EITHER_OF_SWITCH_B_OR_C_TO_BE_CLOSED,_THEN_WHICH_CAN_BE_TRUE??$

A. Switch A should in parallel with B and C is series to them
B. Switch A should be in series with parallel circuit of B and C
C. All of the mentioned
D. None of the mentioned
Answer» C. All of the mentioned
Discussion
12.

If there are ‘M’ switches in parallel numbered from 1, 2, …, M. For circuit to be complete and bulb to glow which of the following is necessary$

A. 1∧ 2∧ 3 ∧ … ∧M should be on
B. 1∧ 2∧ 3 ∧ … ∧M should be off
C. 1 v 2 v 3 v … v M should be on
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
13.

If there are ‘M’ switches in series numbered from 1, 2, …, M. For circuit to be complete and bulb to glow which of the following is necessary

A. 1∧ 2∧ 3 ∧ … ∧M should be on
B. 1∧ 2∧ 3 ∧ … ∧M should be off
C. 1 v 2 v 3 v … v M should be on
D. None of the mentioned
Answer» B. 1‚Äö√Ñ√∂‚àö‚Ć‚àö√º 2‚Äö√Ñ√∂‚àö‚Ć‚àö√º 3 ‚Äö√Ñ√∂‚àö‚Ć‚àö√º ‚Äö√Ñ√∂‚àö√묨‚àÇ ‚Äö√Ñ√∂‚àö‚Ć‚àö√ºM should be off
Discussion