Using the key D: Omar has read Dune; E: Omar has read Emma, which is the correct symbolization of “Omar has read one but not both of Dune and Emma”?

Which connective of SL is unary, that is, attaches to a single sentence rather than joining two sentences?

Strictly by the recursive definition of ‘sentence of SL’, before applying any notational conventions (such as dropping outermost parentheses or using square brackets), which of the following is a sentence of SL?

Using the key G: The game will be played on Saturday; R: It will rain on Saturday, which is the correct symbolization of “The game will be played on Saturday unless it rains”?

Using the key M: Maya will be cast in the play; A: Maya will attend the audition, which is the correct symbolization of “Maya will be cast in the play only if she attends the audition”?

In a single symbolization key, one sentence letter may be used to symbolize two different English sentences, provided both sentences are about the same subject.

Why were Judaism and Christianity significant religious breaks from older religions?

What was the most important role for women before Islam?

Why was Mecca a prominent trading city?

What was the Islamic Golden Age?