Question
Four runners started running simultaneously from a
point on a circular track. They took 400 seconds, 600 seconds, 720 seconds and 900 seconds to complete one round. After how much time do they meet at the starting point for the first time ?Solution
Required time LCM of 400, 600, 720 and 900 seconds = 3600 seconds
More HCF and LCM Questions
Find the wrong number in the given number series.
120, 126, 138, 162, 220, 306
In each of the following giving number series, a wrong number is given. Find out the wrong number?
46 23 23 34.5 70 172.5
...23, 36, 53, 69, 95, 124, 155
Find the wrong number in the given number series.
253, 542, 216, 579, 179, 620
Find the wrong number in the given number series.
24, 120, 721, 5040, 40320, 362880
3, 4, 9, 28, 116, 566, 3397
2 4 11 37 150 771
...210, 140, 105, 84, 70, 63, 52.5
- Find the wrong number in the given number series.
9, 13, 22, 47, 96, 197 131, 212, 261, 286, 295, 299
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