If proposition ‘Students are serious’ is taken to be false then which of the following propositions can be true?
(a) All students are serious
(b) All students are not serious
(c) Some students are not serious
(d) Some serious ones are not students
Select the correct answer from the options given below.
1
(a) only
2
(b) and (d)
3
(d) only
4
(b) and (c)