Brain Teasers
Half a Clock
One evening Mad Ade sat at home waiting for his favourite Kebab shop, "The Sweaty Chef", to open. He kept glancing as his clock (a regular analog clock face with the numerals 1 to 12 correctly positioned), waiting for opening time. Mad Ade noticed that he could draw a straight line to split the clock face in half in such a way that the sum of the numbers on one side of the line would equal the sum of the numbers on the other side of the line?
Where could Mad Ade draw the line, and what is the total of numbers on either side?
Where could Mad Ade draw the line, and what is the total of numbers on either side?
Answer
If Mad Ade was to draw a straight line that begins on the left side of the clock face between 9 and 10 and cuts across the clock face to the right side between 3 and 4.The sum of the numbers above the line equals 39, and the sum of the numbers below the line equals 39.
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