The result of the execution of the following code is:
2
3
2
The round() function rounds a number to the nearest integer. In the first two cases, the result is the nearest integer to the quotient of the two numbers. In the third case, the quotient, 2.5, is halfway between 2 and 3. The round() function rounds halfway cases to the even number, so the result is 2.
The round() function uses a rounding algorithm called banker's rounding. Banker's rounding is a rounding algorithm that rounds halfway cases to the even number. This algorithm is often used in financial applications because it is considered to be more fair than other rounding algorithms.