Puzzles - Number puzzles
Exercise : Number puzzles
268.
Answer
:
2
Explanation
:
Split the diagram into 3 vertical columns. The sum of the numbers in each column equal 17.
269.
Answer
:
31
Explanation
:
As you move to the right, double the previous number and subtract 4, then 3, then 2, then 1 to give the next number along.
270.
Answer
:
7
Explanation
:
Start anywhere on the diagram, and move clockwise, calculating the sum of every third circle. This always equals 15.
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