Selina Concise Mathematics Class 9 ICSE Solutions Indices (Exponents) Selina ICSE Solutions for Class 9 Maths Chapter 7 Indices (Exponents) Exercise 7(A) 1. Evaluate: (i) (ii) (iii) (iv) (v) Solution 1: 2.Simplify: ( i ) (ii) (iii) (iv) Solution 2: 3.Evaluate: ( i ) (ii) Solution 3: 4.Simplify each of the following and express with positive index: ( i ) (ii) (iii) (iv) Solution 4: 5. If 2160 = 2 a . 3 b . 5 c , find a, b and c. Hence calculate the value of 3 a 2 -b 5 -c . Solution 5: 6. If 1960 = 2 a . 5 b . 7 c , calculate the value of 2 -a . 7 b . 5 -c . Solution 6: 7.Simplify: ( i ) (ii) Solution 7: 8.Show that: Solution 8: 9. If a = x m + n . y l ; b = x n + l . l . y m a...
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