Home › CMA Foundation › businessmathematics › Indices › In the expression x^5, the number 5 is called the:
In the expression x^5, the number 5 is called the:
ABase
BCoefficient
CRadical
DIndex (exponent)
Answer & Solution
Correct answer: D. Index (exponent)
1. In the expression a^n, a is the base and n is the index (also called exponent or power).
2. The index gives a compact algebraic notation for repeated multiplication.
3. So in x^5, x is the base and 5 is the index.
_Source: ICMAI BoS CMA Foundation Paper 3 (Business Mathematics & Statistics), Module 2 §2.2 (Indices and Logarithms) + Module 5 (Standard Deviation), p. 112-160 + 318-340_