Multiple choice What is the least number which when doubled will be exactly divisible by 14, 21, 30? 105 120 150 180 Reveal answer Fill a bubble to check yourself A Correct answer Explanation LCM of 14, 21 and 30 14 = 2 x 7 21 = 3 x 7 30 = 2 x 3 x 5 LCM = 2 x 3 x 5 x 7 = 210 Half of 210 = 105