Selina Concise Mathematics Class 9 ICSE Solutions Logarithms Selina ICSE Solutions for Class 9 Maths Chapter 8 Logarithms Exercise 8(A) 1. Express each of the following in logarithmic form: ( i ) 5 3 = 125 (ii) 3 -2 = (iii) 10 -3 = 0.001 (iv) Solution 1: 2. Express each of the following in exponential form: ( i ) log g 0.125 = -1 (ii) log 10 0.01 = -2 (iii) log a A = x (iv) log 10 1 = 0 Solution 2: 3. Solve for x: log 10 x = -2. Solution 3: 4. Find the logarithm of: ( i ) 100 to the base 10 (ii) 0.1 to the base 10 (iii) 0.001 to the base 10 (iv) 32 to the base 4 (v) 0.125 to the base 2 (vi) to the base 4 (vii) 27 to the base 9 (viii) to the base 27 Solution 4: 5. State, true or false: ( i ) If log 10 x = a, then 10 x = a. (ii) If x y = z, then y = log z x . (iii) log 2 8 ...
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