3. Three bells toll at intervals of 16, 24 and 32 seconds. If they begin to toll together, after how much time will
they toll together again?
4. Find the smallest number which when divided by 18 and 37 leaves remainder 3 in each case.
5. A heap of marbles when made up into groups of 28, 32 and 42 leaves always a remainder 5. Find the least
number of marbles such a heap can contain.
5 A, B and C start running on a circular track from their respective points. A completes a full circle in 110
seconds, B in 130 seconds and C in 150 seconds. If they all start from the same point, when will they all
next be at the starting point considering that they all run at the same speed?
In a morning walk, three persons step off together. Their steps measure 80 cm, 85 cm and 90 cm
respectively. What is the minimum distance each should walk so that all can cover the same distance in
complete steps?
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