Puzzles - Number puzzles
Exercise : Number puzzles
88.

Answer
:
2
Explanation
:
The sum of the numbers along each side of the triangle is always 15.
89.

Answer
:
16
Explanation
:
As you move downwards, numbers increase by 3, then 2, then 1, before repeating this pattern.
90.

Answer
:
7
Explanation
:
The numbers in each row of the diagram add up to 18.
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