Chapter 20 • Class 9 Mathematics
Indices (Exponents)
Study by topic — one focused page each
1
Laws of Indices
What are Indices (Exponents)? An index (plural: indices ) or exponent tells us how many times a number (the base) is multiplied by itself. For example…
Start this topic → 2Fractional and Negative Indices
What are Negative Indices? A negative index indicates the reciprocal of the base raised to the positive index: \[ a^{-n} = \frac{1}{a^n} \quad (a \neq…
Start this topic → 3Solving Exponential Equations
What are Exponential Equations? Exponential equations are equations where the variable appears in the exponent (index). For example: \(2^x = 8\), \(3^…
Start this topic →Chapter-wide tests
Online Test
10 MCQ • 15 min
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Olympiad level • 15 min
📝 Full Chapter Test (Download & Print)
35 marks • 75 min • with answer key