Q72.If the mean deviation about the median of the numbers a, 2a, … , 50a is 50 , then |a| equals (1) 3 (2) 4 (3) 5 (4) 2
What This Question Tests
The question assesses the ability to represent given statements using logical symbols and then correctly determine the negation of a compound statement involving 'and' and 'if and only if' connectives.
Concepts Tested
Formulas Used
~(P ∧ Q) = ~P ∨ ~Q
~(P ↔ Q) = (P ∧ ~Q) ∨ (~P ∧ Q)
📚 NCERT Sections This Tests
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12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. What are the radii of the n = 2 and n =3 orbits?
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📋 Question Details
- Chapter
- Mathematical Reasoning
- Topic
- Negation of compound statements
- Year
- 2011
- Shift
- Unknown
- Q Number
- Q72
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 14: Mathematical Reasoning
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