three bells toll at intervals 9,12,15 mins respectively .if they start tolling together , after what time will they next toll together LCM OR HCF?????/
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It is LCM
9 = 3²
12 = 2² x 3
15 = 3 x 5
LCM = 3² x 2² x 5
= 9 x 4 x 5
= 180
∴ The bells will toll together after 180 minutes or 3 hours
9 = 3²
12 = 2² x 3
15 = 3 x 5
LCM = 3² x 2² x 5
= 9 x 4 x 5
= 180
∴ The bells will toll together after 180 minutes or 3 hours
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0
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