Mathematical Reasoning Set 4

1.

In which of the following cases,

is true?

is true,

is true

is false,

is true

is true,

is false None of these NULL NULL NULL

2.

Which of the following propositions is a tautology?

NULL NULL NULL

3.

If

A man is happy
q:A man is rich
Then, the statement, "If a man is not happy, then he is not rich" is written as

NULL NULL NULL

4.

Which of the following is false?

is a tautology

is a contradiction

is a contradiction NULL NULL NULL

5.

Let

and

be two statements. Then,

is a

Tautology Contradiction Neither tautology nor contradiction Both tautology and contradiction NULL NULL NULL

Congratulations