Section 4 : Mathematical Reasoning
Part I : Quantitative Comparison Questions
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Since b < 0 , x < 0
- b - x > 0 and b + x < 0
\ - b - x > b + x
Ans : A
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Since nothing is stated about l, m, and k, it is impossible to determine the relation.
Ans : D
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If
Let
a = 3k; b = 5k
We get ab = 15k2 and/or ab = 15
Since the value of k is not known, the relationship cannot be determined.
Ans : D
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m Ð ARB =[Inscribed angle theorem]
m (arc AXB) = 2 m Ð ARB
= 220
m (arc AXB) + m(arc ARB) = 360
m (arc ARB) = 360 - 220
= 140
180 > 140
i.e. 180 > m (arc ARB)
Ans : A
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