Puzzles - Number puzzles
Exercise : Number puzzles
145.
Answer
:
32
Explanation
:
In each triangle, add together the lower 2 digits, and multiply this by the top digit, to give the value written in the centre of the triangle.
146.
Answer
:
71
Explanation
:
As you move down, numbers follow the sequence of Square Numbers, from 36 to 121, subtracting 10 for the second number, 20 for the next, then 30 etc.
147.
Answer
:
1
Explanation
:
Working in columns, start with the top number, and subtract the number in the centre, to give the result in the bottom row.
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