Geometric Progression

Definition of GM: The geometric mean of two positive numbers $a$ and $b$ is the number $G$ such that $a, G, b$ form a GP.
Formula: $G = ab$ .
Calculation:
- $G = 4 \times 9 = 36 = 6$ .
Result: The GM is 6.

This easy difficulty mathematics question is from the chapter sequence and series, covering the topic of geometric progression. It appeared in the 2025 exam.

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Geometric Progression

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