Please give me all the answers from no. 6 to15

Please give me all the answers from no. 6 to15 Playing with Numbers 89 6. Find the greatest 3-digit number which is exactly divisible by 8, 20 and 24. 7. Find the smallest 4-digit number which is exactly divisible by 32, 36 and 48. 8. Find the greatest 4-digit number which is exactly divisible by each of 8, 12 and 20. 9. Find the least number of five digits which is exactly divisible by 32, 36 and 45. 10. Three boys step off together from the same spot. Their steps measure 63 cm, 70 cm and 77 cm respectively. What is the minimum distance each should cover so that all can cover the same distance in complete steps? II. Traffic lights at three different road crossing change after 48 seconds, 72 seconds and 108 seconds respectively. At what time will they change together again if they change simultaneously at 7 A.M.? 12. If the product of two numbers is 4032 and their HCF is 12, find their LCM. 13. The HCF and LCM of two numbers are 9 and 270 respectively. If one of the numbers is 45, find the other number. 14. Find the HCF of 180 and 336. Hence, find their LCM. 15. Can two numbers have 15 as their HCF and 110 as their LCM? Give reason to justify your answer.