State whether a ∈ C, if {a} ⊂ A: i: A ⊆ B ii: B ⊆ C
Correct answer: D. Statement (i) and (ii) are sufficient if combined
- A. Statement (i) is sufficient
- B. Statement (ii) is sufficient
- C. Statement (i) and (ii) both are sufficient individually
- D. Statement (i) and (ii) are sufficient if combined
- E. Incomplete information
Explanation
Option D is the correct answer because if a is in the set of A , and if A becomes subset of B , which becomes subset of C so then a will be directly related to C. Hence, what the question demands.
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About Logical Deductions
Logical deductions require conclusions to be drawn from stated facts, conditions and relationships without adding outside information. The work includes handling all, some and none statements, necessary and sufficient conditions, ordering restrictions, true or false conclusions, and the difference between what must be true and what could be true.
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