1.

Four bells toll after an interval of 8 ,9 ,12 and 15 seconds respectively when will they to again?

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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