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Quantitative Reasoning
00:45:00
Data SufficiencyHard

If x and y are positive integers, is xy even?

  • x + y is even.
  • x - y is even.
A
Statement (1) ALONE is sufficient, but statement (2) alone is not.
B
Statement (2) ALONE is sufficient, but statement (1) alone is not.
C
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.

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Explain mean, median, and mode?

Mean: Average of all numbers
Median: Middle value when sorted
Mode: Most frequent value

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