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Basic maths

Basic concepts on maths, mostly up to class 10. This is the most important math knowledge used in almost all competitive exams.

Componendo dividendo uncovered to solve difficult Algebra problems quickly 5

Submitted by Atanu Chaudhuri on Sun, 01/07/2018 - 19:03

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Occasionally the distinctive expression appears in one of the expressions, but its inseparable pair, the fraction of the two variables, is not readily available in the problem statement. We say in these cases that componendo dividendo appears in partial form, and the problem is of hidden componendo dividendo type. We need to change the given expression to match the target expression in such cases...

Componendo dividendo applied on number system and ratio proportion problems

Submitted by Atanu Chaudhuri on Wed, 13/06/2018 - 17:36

thumb_componendo-dividendo-in-number-system-ratio-and-proportion

Because of the easy systematic steps most likely we would be able to solve a problem quickly and wholly in mind by Componendo dividendo. In this session we have shown how problems not directly conforming to the Componendo dividendo can still be solved quickly using the concepts of Componendo dividendo...

Basic and rich concepts on Moving Escalator to solve difficult Speed Time and distance problems in a few steps

Submitted by Atanu Chaudhuri on Sat, 23/12/2017 - 17:39

thumb_escalator time distance problems

Usually time and distance problems involve objects moving on fixed stationary ground base. When the base starts moving, an additional level of complexity is introduced. These are problem areas favorable for applying very basic relative speed concepts and arrive at solution in a few steps...

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