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For guided learning and practice on Number system and HCF LCM, follow Comprehensive Suresolv Number system HCF LCM Guide with all articles

SSC CHSL

How to solve difficult Time and Work problems in simpler steps, type 3

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In a large number of math problems involving Time and Work, when more than one group of workers each comprising of a certain number of members, complete a job taking their own time, and the question is to find time taken by similar groups of workers but with different number of members, worker equivalence method invariably leads to much faster conceptual solution with greatly reduced calculation load...

How to solve Surds part 2, double square root surds and surd term factoring

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In this second concept session on how to solve surds, you will learn how to simplify square root of surds that are actually surds expressions under a second square root. You will also learn two more important surd simplification techniques—surd term factoring and coefficient comparison in a surds equation. Suitable surds examples and test level surd problem are used for showing how the surd simplification techniques work. This comprehensive set of surd techniques are important for relevant competitive exams such as SSC CGL Tier II...

Componendo dividendo applied on number system and ratio proportion problems

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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...

Componendo dividendo in Algebra

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We have seen Componendo dividendo to simplify competitive math problems in many topics so much so that the problems could usually be solved in mind. In this session we will highlight the power and elegance of the three-step simple process in the area of Algebra with three examples...

How to solve arithmetic boundary condition problems in a few simple steps

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A simple or compound event (consisting of more than one event) goes on happening systematically at regular intervals till a point just before the end. With each occurrence of the event problem parameters change. The end is reached before the full impact of the event along with the change can happen. This is the boundary to be found out before solving the problem...

How to solve Time and Work problems in simpler steps, type 2 brief

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In 42 days 40 men complete a work. As it happened, instead of all of them working together to finish the job, they started working together, but at the end of every 10th day 5 men left. In how many days would then the work be completed? Rich time and work concept of Mandays technique along with natural number concepts deliver speedy solution...

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