Puzzles - Number puzzles
Exercise : Number puzzles
121.
Answer
:
6
Explanation
:
In each diagram, the central value equals the difference between the sums of the numbers in the left hand column and the sums of the numbers in the right hand column.
122.
Answer
:
14
Explanation
:
In each diagram, the number at the top equals the average of the four smaller numbers.
123.
Answer
:
11
Explanation
:
In each triangular group of circles, start with the longest row and add together 3 adjacent values and put this sum in the circle directly above or below the centre of the 3 values. Continue this sequence towards the apex of each triangle.
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