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To find the sum of three numbers 14, 27 ...

To find the sum of three numbers 14, 27 and 13. We can have two ways.
We may add 27 and 13 to get 40 and then add 14 to get the sum 54. Thus
This can be done for any three numbers. This property is known as the associativity of the addition of numbers. Express this property which we have already studied in the chapter on Whole Numbers, in a general way, by using variables a,b and c.

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