1 (∀X)Ix $\lor$ ∼(∃X)Hx
2

question 247

Multiple Choice

1. (∀x) Ix $\lor$ ∼(∃x) Hx
2. (∃x) Jx ⊃ ∼(∀x) Ix
3. Hc / (∀x) ∼Jx
-Which of the following propositions is not a likely last line of the indented sequence for an indirect proof of the given argument?

• A) Hc • ∼Hc
• B) (∃x)Hx • ∼(∃x)Hx
• C) Id • ∼Id
• D) (∃x)Jx • ∼(∃x)Jx
• E) (∀x)Ix • ∼(∀x)Ix

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Definitions:

Nucleus

The central organelle in a cell containing genetic material (DNA) and responsible for growth, metabolism, and reproduction.

Nerve Net

Simple nervous system that has no center but consists of neurons that receive sensory information and connect directly to other neurons that move muscles.

Hypothesis

A proposed explanation for a phenomenon, based on limited evidence as a starting point for further investigation.

Neuron Theory

The principle that the nervous system is made up of discrete individual cells called neurons, which are the fundamental units of the brain and nervous system.