Answers

2014-05-22T18:22:21+05:30
An integer or a fraction like 6,1/2 or 3.45 ..... are known as rational numbers.
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Rational numbers are the combination of whole numbers and fractions like -5/6,23,-9/5...............
2014-05-22T18:24:37+05:30
Those numbers which can be in form p/q (q≠0)
for example 3/5,4/3
To check whether a no. is rational or not
it should terminating or repeating decimal
for example
0.8 ,0.3333 etc..
π=3.1415926535897932384626433832795.. is irrational number
 
Now find whether
7/21 ,4/9 and 0.8789453.. are rational or not..
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note: irrational numbers are non terminating and non-repeating.. they can't be in p/q form
Any number that can be made by dividing one integer by another. The word comes from "ratio".
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