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41. Write three numbers whose decimal expansions are non-terminating non-recurring.

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42. Find three different irrational numbers between the rational numbers

5 over 7

and

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43. Classify the following numbers as rational or irrational:

square root of 23

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44. Classify the following numbers as rational or irrational:

square root of 225

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45. Classify the following numbers as rational or irrational:

0.3796

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7.478478...... =

7. top enclose 478

∵ The decimal expansion is non-terminating recurring.
∴ 7.478478......is a rational number.

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47. Classify the following numbers as rational or irrational:
1.101001000100001......

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48. Find two irrational numbers between 0.1 and 0.12.

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49. Find two irrational numbers between 2 and 2.5.

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50.

Give two rational numbers lying between
0.232 332 333 2 3333 2...... and 0.212 112 111 2 1111......

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