Practice HCF and LCM Questions and Answers

• The ratio of two number is 6 : 5 and their HCF is 15. So find and their LCM?
• Two men started moving in a circular path from the same place at the same time in the same direction. If they complete one revolution in 12 min and 16 min ...
• Three numbers are in the ratio 2:3:4 and their HCF is 24. Find the numbers?
• If the ratio of two numbers is 8 : 9 and their HCF is 6 then their LCM will be : ...
• If HCF of two numbers is 16 then which of the following can never be their LCM? ...
• If HCF of two numbers is 11 then which of the following can never be their LCM?
• If HCF of two numbers is 27 then which of the following can never be their LCM? ...
• Find the greatest number which when divide 80,121 & 148 leave remainder 2, 4 & 5 respectively?
• Find the greatest number which when divide 69,103 & 171 leave a same remainder 1 in each case?
• Find the greatest number which when divide 28, 82 & 109 leave a same remainder 1 in each case?
• Find the greatest number which when divide 33,55 & 77 leave a same remainder in each case? ...
• Find the greatest number which when divide 25,40 & 55 leave a same remainder in each case? ...
• Five bells commence tolling together and tolls at intervals of 2, 6, 10, 18 and 24 seconds respectively. In 36 minutes, how many times do they toll togethe...
• Five bells commence tolling together and tolls at intervals of 6, 12, 36, 42 and 60 seconds respectively. In 126 minutes, how many times do they toll toget...
• The least number which is exactly divisible by 10,15 and 20 is  ...
• The least number which is exactly divisible by 15, 25 and 30 is 
• The least number which is exactly divisible by 9, 27 and 36 is ...
• The least number which is exactly divisible by 5, 15 and 35 is 
• The least number which when divided by 5, 15 and 25 leave a same remainder 2 in each case? 
• The least number which when divided by 6,18 and 20 leave a same remainder 3 in each case? 
• The least number which when divided by 8,16,22 and 32 leave a same remainder 1 in each case?  ...
• The least number which when divided by 16, 32 and 48 leave remainder 4, 20 and 36 respectively is? 
• The least number which when divided by 3, 9, 27 and 81 leave remainder 2, 8, 26 and 80 respectively is? 
• The least number which when divided by 12, 27 and 39 leave remainder 8, 23 and 35 respectively is?  ...
• The H.C.F of two numbers is 3 and their L.C.M is 782. If one of the numbers is 34, find the other?
• The H.C.F of two numbers is 2 and their L.C.M is 117. If one of the numbers is 13, find the other?
• The H.C.F of two numbers is 8 and their L.C.M is 136. If one of the numbers is 64, find the other?
• The sum of two numbers is 96 and their HCF is 12. Total number of such pairs is?     
• The sum of two numbers is 65 and their HCF is 13. Total number of such pairs of numbers is?     
• The sum of two numbers is 126 and their HCF is 14. Total number of such pairs of numbers is?     
• The sum of two numbers is 99 and their HCF is 9. Total number of such pairs of numbers is?     
• The sum of two numbers is 104 and their HCF is 13. Total number of such pairs of numbers is?      ...
• The sum of two numbers is 96 and their HCF is 24. Total number of such pairs of numbers is?      ...
• The product of two numbers is 3600 and their HCF is 6. Total number of such pairs of numbers is?     
• The product of two numbers is 10140 and their HCF is 13. Total number of such pairs of numbers is?      ...
• The product of two numbers is 504 and their HCF is 6. Total number of such pairs of numbers is?     
• The product of two numbers is 972 and their HCF is 9. Total number of such pairs of numbers is?      ...
• Find the greatest number of four digits which is exactly divisible by 12, 15, 20 and 35?
• Find the least number of four digits which is exactly divisible by 6, 8 and 16?
• Find the least number of four digits which is exactly divisible by 5, 15 and 25?