Find the HCF of 8,20,28,44
8=2*2*2,20=2*2*5,28=2*2*7,44=2*2*11
Find the HCF of 4,6,12
A race is being conducted on a circular track. Time taken by each person to run is 4s,8s,12s respectively. In how many minutes will they reach the starting point simultaneously.
Five clocks chime in an interval of 3,6,9,12,18 seconds respectively.How many times will they chime in 30 minutes.
Three persons took membership in a library.The books are returned by first,second and third persons in 4,6 and 8 days respectively.In how many days will they meet?
Find the least number which when divided by 6,12,15 leaves remainder 5