Multiple choice Which of the following numbers is not the sum of three consecutive even integers? 18 54 123 294 324 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Let three consecutive positive even integers are (a – 2), a, (a + 2), their sum is 3a. As a is the middle number and is an even integer. So the sum must be divisible by 6. Out of given choices, choice (3) is not a multiple of 6.