Puzzles - Number puzzles
Exercise : Number puzzles
139.
Answer
:
6
Explanation
:
In each triangle, add together the lower two digits and subtract 2 for the left hand triangle, 3 for the middle and 4 for the right hand triangle, putting the result at the apex of the triangle.
140.
Answer
:
9
Explanation
:
Add together the four outer numbers in each diagram. Divide this answer by two to get the middle number.
141.
Answer
:
12
Explanation
:
In each triangle, the central value equals the average of the 3 values around the outside.
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