Question

On a shelf are placed six volumes side-by-side labelled A, B, C, D, E and F. B, C, E, F have green covers while others have yellow covers. A, D, B are new volumes while the rest are old volumes. A, C, B are law reports while the rest are medical extracts. Which two volumes are old medical extracts and have green covers?

• A. B, C
• B. C, D
• C. C, E
• D. E, F

Answer 1

Answer: (D)

E, F

We may prepare a table as follows:

	Green Cover	Yellow Cover	New Volume	Old Volume	Law Reports	Medical Extracts
A		$✓$	$✓$		$✓$
B	$✓$		$✓$		$✓$
C	$✓$			$✓$	$✓$
D		$✓$	$✓$			$✓$
E	$✓$			$✓$		$✓$
F	$✓$			$✓$		$✓$

Clearly, E and F are old volumes which have green covers and are medical extracts.