Surds and Indices Worksheet-2

Surds and Indices Worksheet-2

1. (0.04)^–1.5 = ?

(a) 25                  (b) 125                (c) 250               (d) 625

2. (17)^{3. 5} × (17)^? = 17⁸

(a) 2.29              (b) 2.75              (c) 4.25              (d) 4.5

3. 49 × 49 × 49 × 49 = 7^?

(a) 4                    (b) 7                    (c) 8                    (d) 16

4. The value of (8^–25 – 8^–26) is

(a) 7 × 8^–25       (b) 7 × 8^–26      (c) 8 × 8^–26        (d) None of these

(a)                    (b)                    (c)                  (d)

(e) None of these

6. (18)^{3. 5} ÷ (27)^3.5 × 6^3.5 = 2^? :

(a) 3.5                 (b) 4.5                (c) 6                    (d) 7

(e) None of these

7. (25)^{7. 5} × (5)^2.5 ÷ (125)^{1. 5} =  5^?

(a) 8.5                (b) 13                  (c) 16                  (d) 17.5

(e) None of these

8. The value of is:

(a)                    (b)                   (c)                 (d)

9. If , then the value of x is:

(a)                    (b) 1                    (c) 2                    (d)

10. If then the value of n is:

(a) 3                    (b) 2                    (c) 0                    (d) –2

Answer Key:

(1)-b; (2)-d; (3)-c; (4)-b; (5)-c; (6)-d; (7)-b; (8)-a; (9)-c; (10)-b