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Four bells toll after an interval of 8 ,9 ,12 and 15 seconds respectively when will they to again? |
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Answer» Answer: after 19 seconds Step-by-step explanation: because the pattern is going as adding NUMBER increase by one by one as example 1st bell rang 8 and the 2nd is 9 DIFFERENCE is 1 and again bell rang in 12 difference between 9 and 12 is 2 HOPE U GET CLEAR IDEA |
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