Correct Answer: Option A

Explanation

Numbers: 3, 6, x, 7, 5  
Mean = \(\frac{(21 + x)}{5}\)  

Standard deviation = 2, so the sum of squared deviations = 20.

Solving:  
2x² - 21x + 27 = 0  

x = 9 or x = 1.5 ≈ 2

The **least possible value of x is 1.5

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