Practice HCF and LCM Questions and Answers

• What is the least number which when divided by 4, 6 & 8 leave a remainder 6 in each case & it is also divisible by 5?
• What is the least number which when divided by 3, 15 & 18 leave a remainder 6 in each case & it is also divisible by 12?
• A boy can swim in still water at a speed of 8 km/hr. If the speed of the current would have been 3 km/hr, then the boy could swim 55 km
• The LCM of two numbers is 216 and their HCF is 36. If one of the numbers is 72, the other number is:
• The LCM of two numbers is 432 and their HCF is 55. If one of the numbers is 132, the other number is:
• The HCF of 450 and 740 is 150, their LCM is:
• The HCF of 2165 and 7409 is 239, their LCM is:
• The HCF of 4625 and 5445 is 225, their LCM is:
• The HCF of 5453 and 6409 is 221, their LCM is:
• The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 280. If one of the number is 224, then the other number is:
• The LCM of two numbers is 3 times of their HCF. The sum of LCM and HCF is 240. If one of the number is 200, then the other number is:
• The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 350. If one of the number is 200, then the other number is:
• The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 320. If one of the number is 256, then the other number is:
• The LCM of two numbers is 5 times of their HCF. The sum of LCM and HCF is 300. If one of the number is 250, then the other number is:
• The HCF of two numbers is 8. Which of the following can never be their LCM?
• The HCF of two numbers is 14. Which of the following can never be their LCM?
• The HCF of two numbers is 7. Which of the following can never be their LCM?
• The HCF of two numbers is 13. Which of the following can never be their LCM?
• The HCF of two numbers is 18. Which of the following can never be their LCM?
• The HCF of two numbers is 9. Which of the following can never be their LCM?
• Find the HCF of 798 and 525.
• Find the HCF of 864 and 582.
• Find the HCF of 244 and 118.
• Find the HCF of 834 and 582.
• Find the HCF of 932 and 748.
• Find the LCM of 36, 45, 60, 80.
• Find the LCM of 20, 30, 40, 50.
• Find the LCM of 30, 35, 40, 60.
• The HCF of two numbers is 21. Which of the following can never be their LCM?
• The ratio of two numbers is 6:11 and their LCM is 264. The numbers are:
• The ratio of two numbers is 9:12 and their LCM is 324. The numbers are:
• The ratio of two numbers is 5:10 and their LCM is 100. The numbers are:
• The ratio of two numbers is 6:14 and their LCM is 126. The numbers are:
• The ratio of two numbers is 4:8 and their LCM is 96. The numbers are:
• The ratio of two numbers is 12:14 and their LCM is 168. The numbers are:
• The ratio of two numbers is 10:12 and their LCM is 240. The numbers are:
• Let N be the greatest number that will divide 82, 105, 128 leaving the same remainder in each case. Then sum of the digits in N is:
• Let N be the greatest number that will divide 86, 120, 154 leaving the same remainder in each case. Then sum of the digits in N is:
• Let N be the greatest number that will divide 78, 109, 140 leaving the same remainder in each case. Then sum of the digits in N is:
• Let N be the greatest number that will divide 72, 105, 138 leaving the same remainder in each case. Then sum of the digits in N is: