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1.5 NUMBER PYRAMID
In number pyramid, the number in each space is the sum of
the two numbers below it.
Blue circle will be the sum
of two green circles.
9
5 4
3 2 2
2 1 1 1 2 1 1 1
Start with a circle, which has two
filled adjoining circles below it.
` Therefore, blue circle will be 2 + 1 = 3.
` Similarly, if we take the green circle, the one above the blue circle, the sum
will be 3 + 2 = 5.
` We will get the remaining numbers by following the same pattern.
Level 1: Reasoning 19

