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Mathematical Reasoning — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsMathematical Reasoning1 Mark
MCQ
The method $(s)$ that are used to check the validity of statements is:
  • A
    contrapositive method
  • B
    method of contradiction
  • C
    using a counter example
  • ✓
    All the above
✓

Answer

Correct option: D.
All the above
The methods that are used to check the validity of statements include the following.
direct method
contrapositive method
method of contradiction
using a counter example

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