Logical Reasoning Logical Statements & Negation SZABMU 2024
PMDC Verified Question 1 of 1
"All practical numbers are even" is a false statement. Then the true statement is:
A
All practical numbers are odd
B
Some practical numbers are not even
C
Some practical numbers are even
D
Some practical numbers are not odd
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Some practical numbers are not even
Concept: Formal Logical Negation.

Formula: \(\neg(\forall x, P(x)) \iff \exists x, \neg P(x)\)

Solution: The logical negation of 'All A are B' is 'Some A are not B' (Option B).

Why other options are incorrect:

Option A: Makes a contrary universal claim rather than a strict logical negation.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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