4 bells toll together - Wikitechy https://www.wikitechy.com/interview-questions/tag/4-bells-toll-together/ Interview Questions Mon, 06 Sep 2021 11:53:25 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png 4 bells toll together - Wikitechy https://www.wikitechy.com/interview-questions/tag/4-bells-toll-together/ 32 32 Six bells commence tolling together and toll at the intervals of 2, 4, 6, 8, 10, 12 seconds respectively. In 60 minutes how many times they will toll together ? https://www.wikitechy.com/interview-questions/lcm-and-hcf/six-bells-commence-tolling-together-and-toll-at-the-intervals-of-2-4-6-8-10-12-seconds-respectively-in-60-minutes-how-many-times-they-will-toll-together/ https://www.wikitechy.com/interview-questions/lcm-and-hcf/six-bells-commence-tolling-together-and-toll-at-the-intervals-of-2-4-6-8-10-12-seconds-respectively-in-60-minutes-how-many-times-they-will-toll-together/#respond Tue, 17 Aug 2021 17:50:52 +0000 https://www.wikitechy.com/interview-questions/?p=1843

Six bells commence tolling together and toll at the intervals of 2, 4, 6, 8, 10, 12 seconds respectively. In 60 minutes how many times they will toll together ?

A. 16

B. 15

C. 31

D. 30

Answer : C. 31

Explanation:

LCM of 2 , 4 , 6 ,8 , 10 , 12 is 120 seconds, that’s 2 minutes.
Now 60 / 2 = 30
Adding one bell at the beginning it’ll be 30 + 1 = 31.

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