Quant 2nd Edition – DS Questions 81-90



Question 81 – “Is x^2…”

OG Explanation is fine.

Question 82 – “Michael…”

OG Explanation is fine.

Question 83 – “If xy > 0….”

OG Explanation is fine.

Question 84 – “The only…”

OG Explanation is fine.

Question 85 – “Last year….”

Question 86 – “If m and n are consecutive…”

OG Explanation is okay.  For statement I, a more intuitive approach might be better.

Question 87 – “If k and n……”

OG Explanations for 1 and 2 are fine.

Alternate way to combine Statements 1 and 2.

Statement 1:   n-3=2k     n=2k + 3

Statements 1 and 2:        n= (2k – 4) + 7

From statement 2, 2k-4 is divisible by 7.   If 7 is added to a number that is already divisible by 7, the sum must be divisible by 7.

The correct answer is C.

Question 88 – “Is the perimeter….”

OG Explanation is fine.

Question 89 – “If x+y+…”

OG Explanation is fine but lengthy.

Question 90 – “Can the positive…”

OG Explanation is fine.

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