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1. Number System
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Q44 of 131 Page 1

Examine whether the following numbers are rational or irrational:
(i)     , (ii) (3-)(3+), (iii)  

(i) (3 + ) = 9 + 2 + 6 = 11 +6, which is irrational.
(ii) (3-)(3+)  = (3)- () = 9 - 3 = 6 , which is rational.
(iii) = × = = , which is irrational.

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42 Simplify by rationalising the denominator: 43 Simplify by rationalising the denominator: 45 Simplify by rationalising the denominator: 46 Find three irrational numbers between 2 and 2.5 .
Questions · 131
1. Number System
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