Multiple choice What is the mean of the first 10 whole numbers? 4.5 5 5.5 6 Reveal answer Fill a bubble to check yourself A Correct answer Explanation The first 10 whole numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Their sum = 45. Mean = 45 ÷ 10 = 4.5. Remember that whole numbers start from 0, not 1.