Cooperative Organization for the Development of Employee Selection Procedures (CODESP) Practice Exam

To determine if a number is divisible by 2, you need to check the last digit of the number. A number is divisible by 2 if it ends in an even digit, which includes 0, 2, 4, 6, or 8. This rule applies regardless of the size of the number or whether it contains decimal points, making it a simple and effective method for checking divisibility by 2.

The other choices do not accurately describe the conditions for divisibility by 2. For example, stating that a number must be larger than 10 does not relate to its divisibility by 2; many numbers smaller than 10, such as 2 or 4, are also divisible by 2. A prime number can only include certain specific numbers (like 2) and does not guarantee divisibility by 2 for all primes. Lastly, not all numbers need to be whole to be considered for divisibility by 2; decimals can also be even or odd, affecting their divisibility. Therefore, the correct understanding lies in recognizing that the last digit being even is the definitive criterion for determining divisibility by 2.