Q18 of 131 Page 1

Express 18.484848…………….in the form of .

            Let x   =  18.484848.……….........................…(i)      ∴ 100 x  = 1848.4848………....................(ii)
(ii) – (i), 99 x = 1830 ∴  x = =  ∴ 18.484848………=

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16 Express 3.7777………. in the form of . 17 Prove that 3√3 is not a rational number. 19 Show that is not a rational number. 20 Identify the following as rational or irrational numbers. Give the decimal representation of rational numbers.
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(v) - 
(vi)