Question:medium
Which SQL expression calculates the square root of 16?
Which SQL expression calculates the square root of 16?
Updated On: Jan 16, 2026
- POWER(16,2)
- POWER(16,0.5)
- POWER(16,1)
- MOD(16)
Show Solution
The Correct Option is B
Solution and Explanation
To identify the SQL expression that computes the square root of 16, we will analyze the given options:
- POWER(16,2): This evaluates to 16 squared, resulting in 256.
- POWER(16,0.5): This expression calculates the square root of 16. Exponentiation by 0.5 is equivalent to taking the square root. Therefore,
160.5 = 4. - POWER(16,1): This expression yields 16, as any number raised to the power of 1 remains unchanged.
- MOD(16): This denotes the modulus operation, which is unrelated to square roots and necessitates a second argument for proper execution.
Based on this analysis, the SQL expression correctly calculating the square root of 16 is POWER(16,0.5).
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