Discrete Mathematics | MA3354 |Unit 1|Logic & Proofs|Theory of inferences in Tamil | Indirect method

Discrete Mathematics | MA3354 |Unit 1|Logic & Proofs|Theory of inferences in Tamil | Indirect method in Tamil

Discrete Mathematics:

Matrices and Calculus

2nd Sem Maths: Statistics & Numerical Methods

3rd Sem Maths: Transforms and Partial Differential Equations(MA3351):

3rd Sem Maths: Random Processes and Linear Algebra(MA3355):

MA3391 Probability and Statistics

MA3303:Probability and Complex Functions

4th Sem Maths: Vector Calculus And Complex Functions(MA3452)

Calculator tricks:

[MillerMoore-gqpe]

Can I use premises twice in direct method?

[ajayshrikaanth]

I think the final step is wrong because we need to consider P but instead you considered Q and told the answer