round 2.4 to the nearest whole number.

Explanation:

Step1: Recall rounding rules

To round a number to the nearest whole number, we look at the digit in the tenths place. If the digit in the tenths place is less than 5, we round down (keep the whole number part as it is). If the digit is 5 or greater, we round up (increase the whole number part by 1).

Step2: Apply the rule to 2.4

In the number 2.4, the digit in the tenths place is 4, which is less than 5. So we round down, keeping the whole number part (2) as it is.

Answer:

2