Answers

2016-02-13T18:20:09+05:30
Use the property of geometric means. Between any 2 numbers a and b , provided a b is not a perfect square, a b is an irrational number. In your case, a b = 0.7 × 0.77 = 0.539 . So 0.539 is one irrational number.
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2016-02-13T18:35:42+05:30
We can take 0.7 as 0.70. The irrationals between 0.70 & 0.77 =0.71118394759837493749......; 0.738483048749493939.........
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