If the geometric mean of two numbers is 12 and one number is 18, the other number is: MCQ with Answer and Explanation

If the geometric mean of two numbers is 12 and one number is 18, the other number is:
A. 10
B. 9
C. 6
D. 8
Answer: Option D
Solution (By JKExamLibrary)
Geometric mean = √(x×y). Given √(18×y)=12, square both sides: 18y=144, so y=144/18=8. This uses the definition of geometric mean for two values.

This question belongs to: Accountancy and Statistics Statistics

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