Back to Critical Thinking Puzzles

Pyramid Passage

Spare My Brain

Since the four wheels of the three-wheeled car share the journey equally, simply take three-fourths of the total distance (50,000 miles) and you'll get 37,500 miles for each tire.

Putting It Together

The list contains fifty pairs of numbers that add to 100 (100+0, 99+1, 98+2, 97+3, etc.) with the number 50 as an unpaired leftover:50 X 100 + 50 = 5,050

Fractured Farmland

Eighteen: one whole composite block (1,2,3,4,5,6); six separate blocks (1) (2) (3) (4) (5) (6); three horizontal pairs (1 & 4) (2 & 5) (3 & 6); four vertical pairs (1 & 2) (2 & 3) (4 & 5) (5 & 6); two vertical triplets (1,2,3) (4,5,6); two large blocks (1,4,2 & 5) (2,5,3 & 6)

Kitchen Cups

Fill the three-cup container with water. Pour it into the five-cup container. Fill the three-cup container again, and fill up the five-cup container. This will leave you with exactly one cup of water in the three-cup container.

Puzzles and solutions copied, with permission, from Michael DiSpenzio's book called

Critical Thinking Puzzles.More information is available about this book.

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10 January 1996