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**Q.1. What is the value of (2 ^{3})^{2}?**

(2

= 2

**Solution.** 1, 0, 3.14 and 22/7 are rational numbers.**Q.5. Which of the following cube roots is not irrational?**

3 √5, 3√6, 3√7, 3√8, 3√9**Solution. **3√8 is not an irrational number.**Q.6. Which three integers are equal to their own cube roots?Solution. **–1, 0 and 1

[∵ 3√-1 = -1, 3√1 = 1 and 3√0 = 0 ]

Solution.

The given number is rational. [∵ “076923” repeats]

Solution.

Solution.

Solution.

Solution.

Solution.

Solution.

Solution.

[∵ 22/7 = 3.142857142... and π =3.141592653589...]

**Solution. **√7 is irrational.**Q.16. Which of the following is the value of 0.999... expressed as p/q : **

(i) 9/10

(ii) 1

(iii) 999/1000**Solution. **0.999... = 1**Q.17. What is a terminating decimal?Solution. **The number with a finite decimal part is known as terminating decimal.

Terminating Decimal

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