Math
A 5 meter long wire is cut into two pieces. If the longer piece is then used to form a perimeter of a square, what is the probability that the area of the square will be more than 1 if the original wire was cut at an arbitrary point?
A.
B.
C.
D.
E.
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse to see the answer)
Verbal
Brown dwarfs' dim red stars that are too cool to burn hydrogen's are very similar in appearance to red dwarf stars, which are just hot enough to burn hydrogen. Stars, when first formed, contain substantial amounts of the element lithium. All stars but the coolest of the brown dwarfs are hot enough to destroy lithium completely by
converting it to helium. Accordingly, any star found that contains no lithium is not one of these coolest brown dwarfs.
The argument depends on assuming which one of the following?
(A) None of the coolest brown dwarfs has ever been hot enough to destroy lithium.
(B) Most stars that are too cool to burn hydrogen are too cool to destroy lithium completely.
(C) Brown dwarfs that are not hot enough to destroy lithium are hot enough to destroy helium.
(D) Most stars, when first formed, contain roughly the same percentage of lithium.
(E) No stars are more similar in appearance to red dwarfs than are brown dwarfs.
Question Discussion & Explanation
Correct Answer - A - (click and drag your mouse to see the answer)
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