The mantissa in -1.58E5 is . . . . . . . .

Solution (By Examveda Team)

This question is about understanding scientific notation in MySQL. Scientific notation is a way to represent very large or very small numbers using exponents.

The format for scientific notation is: "a" * 10^"b"

Where:
    "a" is the mantissa, a number between 1 and 10.
    "b" is the exponent, an integer.

In the given example, "-1.58E5", we can see that the mantissa is the part before the "E", which is "-1.58".

Therefore, the correct answer is Option A: -1.58.