True / False / Cannot-say judgements from given data.
Compute the quantity the statement claims from the exhibit, then judge True or False. 'Cannot say' applies only when the data needed is genuinely not shown.
Based on the table, decide: ‘North region sales were more than double South region sales.’
Answer: True
Double South = 2 × 450 = 900. North = 920, which is more than 900, so the statement is True. (Both figures are shown, so 'Cannot say' does not apply.)
Check whether the exhibit actually contains the data the statement needs. If it isn't derivable from what's shown, the answer is Cannot say — not False.
Test each statement alone for whether it pins down the answer, then both together; choose the matching sufficiency option.
Is the number x greater than 50? (1) x is greater than 40. (2) x is a multiple of 30.
Answer: Both together are sufficient, but neither alone
Statement (1): x could be 45 (≤50) or 60 (>50) — insufficient. Statement (2): x could be 30 or 60 — insufficient. Together: x>40 and a multiple of 30 means x is 60, 90, … always > 50 — sufficient. So BOTH together, neither alone.
Evaluate both quantities exactly, then compare; pick 'cannot determine' only if the relationship genuinely varies.
Column A: 25% of 80. Column B: 80% of 25. Which is greater?
Answer: The two quantities are equal
Column A = 0.25 × 80 = 20. Column B = 0.80 × 25 = 20. They are equal — 'a% of b' always equals 'b% of a'. The trap is assuming the larger percentage wins.