Problems on H.C.F and L.C.M - General Questions

Find the greatest number that divides 125, 205, 365 leaving the same remainder in each case.

What is the least number which, when divided by 10, 4, 16, leaves a remainder 3 in each case?

Three bells toll at intervals of 18, 10, 8 minutes. If they toll together now, after how many minutes will they next toll together?

Find the greatest number that divides 388, 415, 550 leaving the same remainder in each case.

Find the H.C.F. of 36, 96 and 48.