Question

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

I had been asked this question by my college director while I was bunking the class.

Enquiry is from Logic Circuits in section The Foundation: Logics and Proofs of Discrete Mathematics

Answer 1

The correct answer is (c) 1 v 2 v 3 v … v M should be on

For explanation: Anyone should be on in-order to complete the circuit.