JEE Main 201910 AprilMorning Shift
- Exam
- JEE Main
- Year
- 2019
- Date
- 10 April
- Shift
- Morning Shift
- Subject
- Mathematics
- Chapter
- Mathematical Reasoning
JEE Main 2019 · 10 April · Morning Shift · Mathematics · Mathematical Reasoning
Which one of the following Boolean expression is a tautology?
Which one of the following Boolean expression is a tautology?
Options
- A
- B
- C
- D
Correct answer
D.
Step-by-step solution
Let
| T | T | T | T | F | F | T | F | T | T | T | F |
| T | F | T | F | F | T | T | T | T | T | T | T |
| F | T | T | F | T | F | F | F | T | F | F | T |
| F | F | F | F | T | T | T | F | T | F | F | F |