Three bells toll together at intervals of 9, 12, and 15 minutes respectively. After how many minutes will they toll toge...

Type: MCQ • Marks: 1

Three bells toll together at intervals of 9, 12, and 15 minutes respectively. After how many minutes will they toll together next?

A. 90

B. 360

C. 120

D. 180

Explanation

Next simultaneous tolling occurs at LCM(9, 12, 15) = 180 minutes.

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Class 7th Ganita Prakash 2

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