Free Study Material For RRB Examination: Mathematics (Indices and Surds)


Free Study Material For RRB Examination

Subject : Mathematics (Indices and Surds)

Indices

In the expression xn, n is called the exponent or index and x is called the base and xn is read as ‘x to the power of n’ or ‘x raised to the power n’.

eg,

1. 36 = 3 × 3 × 3 × 3 × 3 × 3 = 729
43 = 4 × 4 × 4 = 64

The expression (xm)n is read as ‘x raised to the power m whole raised to the power n’.

2. (24)3 = (16)3 = 212



 

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