Q20 of 23 Page 1

Find two irrational numbers lying between and

Note: to find irrational numbers between two numbers we take square root of their multiple.
Irrational numbers lying between and is

Irrational numbers lying between and is

Hence two irrational numbers lying between and are –

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18

Prove that
(a) is not arational number and
(b) is not arational number.

19

Examine whether the following numbers are rational or irrational:
(i)
(ii)
(iii)

21

Express as a decimalfraction.

22

Express as a decimalfraction.