Math
If is an odd integer, which of the following numbers must be even?
A.
B.
C. where is a prime number
D.
E.
Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to see the answer)
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Verbal
Per unit, compact fluorescent light bulbs (CFLs) are slightly more expensive to produce than incandescent light bulbs, and CFLs also sell at a noticeable premium over comparable incandescent light bulbs. However, CFLs are less expensive overall than incandescent light bulbs because CFLs typically use 75% less electricity to operate, and thus provide the ability to save money on energy expenses over the long run.
The above statements, if true, most strongly support which of the following?
Ⓐ The additional energy cost from use of incandescent light bulbs instead of CFLs exceeds the additional manufacturing cost associated with the production of CFLs.
Ⓑ CFLs are now as readily available as incandescent light bulbs at most major retailers, including online vendors.
Ⓒ Incandescent light bulbs are compatible with a greater number of light fixtures than are CFLs.
Ⓓ Households equipped with CFLs use less energy than households equipped with incandescent light bulbs.
Ⓔ The primary material from which CFLs are manufactured is slightly more expensive than the primary material used to manufacture incandescent light bulbs.
Question Discussion & Explanation
Correct Answer - A - (click and drag your mouse to see the answer)
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