Home > Arithmetic Aptitude > Problems on H.C.F and L.C.M > Questions and Answers
Exercise:
01.  The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:  

02.  Three numbers which are coprime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:  

03.  A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ?  

04.  The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:  

05.  The least number which is a multiple of 11 and when divided by 3, 5 and 9 leaves 2 as remainder:  

06.  3 bells beep at an interval of 12, 20, and 35 minutes. If they beep together at 10 a.m., then they will again beep together at:  

07.  A man decides to pave with square tiles his hall which is 4.8 metres long and 5.38 metres wide. Find the largest size of the tile that he could use.  

08.  Find the least number that is a perfect cube and can be divisible by 8, 14, and 18.  

09.  If the product of the L.C.M. and H.C.F. of two numbers is 60 and the difference between the two numbers is 4, find the numbers.  
