Sunday, January 15, 2012

Number: Easy classification

There are 2 types of number in real world.
one is exact number and another is approximate number.
for exact number : 1 , 2 , 3, 4.
For approximate number : 3.146

We also consider significant digits or figures for number , the digits that are used to express a number called significant digits.
like as the number 3.1416

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