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07 REASONING AND ANALYSIS
Your Aim
to learn about:
Number Pyramid Number Grid
Secret Message: Decoding
NUMBER PYRAMID
In a number pyramid, the number
in each space is the sum of the two
numbers below it. 9
Start with a space, which has two
filled adjoining spaces below it. 5 4
Here blue circle is the sum of
two green circles.Therefore, blue
circle is 2 + 1 = 3. 3 2 2
We can get the remaining numbers
by following the same pattern. 2 1 1 1
NUMBER GRID
In a number grid each grid is replaced by the value of its result. Let us start filling
the numbers in the grid by solving each grid.
We usually start with the number at the centre. Here, it is 30.
What if you could use computer to create secret codes that only
your friends could decode? What would your code say, and how
would you use it to communicate?
Reasoning and Analysis 51

