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Closed 8 years ago.
Recently while solving few questions related to Progressions(specifically, A.P.), I realized one thing that in question like, "Find the sum of following series" and suppose the terms are up to nthnth places.
Then instead of going by the formula(s), I can simply add the first 33 to 44 given elements of the series and that would give me a rough idea of where the summation would belong. And since we are given Multiple Choice Question), I can solve it much more quickly.
So, is there any other trick that you may be aware of or formulated on your own related to solving any type of Progression? If yes, then please share it with us.
