Multiple choice The sum of all natural numbers from 100 to 300 which are exactly divisible by 4 or 5 is 10200 15200 16200 None of these Reveal answer Fill a bubble to check yourself C Correct answer Explanation Use inclusion-exclusion: Sum of multiples of 4 (10200) + Sum of multiples of 5 (8200) - Sum of multiples of 20 (2200, counted twice). Total = 10200 + 8200 - 2200 = 16200.