What is the least five-digit number that is exactly divisible by 21, 35, and 56?A10000B10040C10920D10080Answer: D. 10080Read Explanation:Solution:Given:Numbers are 21, 35, 56Calculation:LCM of 21, 35, and 56 = 840So, the 5 digit number must be 840m, where m is a real number.Now,For m = 10Number is 8400For m = 11Number is 9240For m = 12Number is 10080 which is a 5 digit number∴ The required number is 10080. Open explanation in App