Question
Five bells commence tolling together and tolls at
intervals of 6, 12, 36, 42 and 60 seconds respectively. In 126 minutes, how many times do they toll together?Solution
First time, 5 bells will toll together on = LCM (6,12,36,42 & 60sec) = 1260 sec = 21 minIn 126 minutes , they will toll together = 126/21 = 6 times But it is also given that they commence tolling together at starting time so answer is 6 + 1 = 7.
More HCF and LCM Questions
3, 6, 18, 90, 630, 5670
332, 404, 350, 390, 360, 380
42, 61, 78, 93, 102, 109
66, 220, 384, 543, 702, 861
45, 166, 310, 480, 675, 900
Find the wrong number in the given number series.
32, 61, 92, 129, 170, 211
- Find the wrong number in the given number series.
310, 259, 208, 167, 128, 115 Find the wrong number in given number series.
2669, 2838, 2993, 3185, 3397, 3629
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10, 35, 260, 885, 2110, 4135 Find the wrong number in given number series.
1177, 1161, 1125, 1061, 961, 837.
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