Logical reasoning PrepTest 117 · Section 3 · Question 7

Incorrect. The sufficient condition here is Keyboarding skills, but that's a necessary condition in the stimulus, so we can eliminate this answer.

Incorrect. Not being able to write the essay with a word processing program is a necessary condition of the chain, and this answer presents it as a sufficient condition.

Correct. Argument or Facts:
Facts

Question Type:
Must Be True

Stimulus Summary:
not Keyboarding skills → not Use a computer
not Use a computer → not Write essay with word processor

Answer Anticipation:
This is about as straightforward of a conditional stimulus as we're likely to see in a Must Be True question—two conditionals that are introduced with "if" and chain straight together. Let's make that chain take the contrapositive and find an answer that matches up with it:
not Keyboarding skills → not Use a computer → not Write essay with word processor
Write essay with word processor → Use a computer → Keyboarding skills

Answer Explanation:
Write essay with word processor → Keyboarding skills. This answer matches up with the contrapositive of the chain so it's the correct answer. If you got tripped up by it saying "at least some" skills note that the original term is "No keyboarding skills." When that term is negated when we take the contrapositive "none" becomes "some."

Key Takeaway:
Practice conditionals! This question should take you a minute or less but that'll only happen if you're rock solid on this concept.

Incorrect. This answer is thrown off by the "probably" since that's weaker than the stimulus. It could be correct, as stronger statements can support weaker ones, but that's unlikely in a question 7 with such clear conditional statements. Looking past that, this answer negates the second conditional.

Incorrect. This answer is the reversal of the second conditional.