Multiple choice Find the least number exactly divisible by 12, 15,20,27 520 530 540 510 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The least number divisible by 12, 15, 20, and 27 is their Least Common Multiple (LCM). The prime factorizations are 12=2^2*3, 15=3*5, 20=2^2*5, and 27=3^3; the LCM is 2^2*3^3*5 = 4*27*5 = 540.