Mathematical reasoning

Reverse cheque puzzle solution

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On finally receiving double the amount he wrote in cheque after 20 paise was expended from amount received from bank, Bhabababu understood that the bank cashier must have given rupees for paise written on cheque, and paise for rupees written on cheque. The reversing created a basic confusion in finding the cheque amount...

Basic and Rich Percentage Concepts for solving difficult SSC CGL problems

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In business world, academics, Science and technology, or daily life, use of the concept of Percentage is ubiquitous and all-pervading. Because of its apparent simplicity though, this concept is taken for granted with not much emphasis on its elaboration and explanation....

SSC CGL Tier II level Solution Set 10, Time-work Work-wages Pipes-cisterns 1

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This is the 10th solution set of 10 practice problem exercise for SSC CGL Tier II exam and the 1st on topics Time-work, Work-wages and Pipes-cisterns. For maximum gains, the test should be taken first, that is obvious. But more importantly, to absorb the concepts, techniques and deductive reasoning elaborated through these solutions, one must solve many problems in a systematic manner using this conceptual analytical approach. One can learn well only by practicing learning by doing...

SSC CGL level Solution Set 67 on Time-Work Work-Wages Pipes-Cisterns 6

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This is the 67th solution set of 10 practice problem exercise for SSC CGL exam and 6th on related topics Time-Work, Work-Wages, and Pipes-Cisterns. Students must complete the corresponding question set in prescribed time first and then only refer to this solution set for gaining maximum benefits from this resource...

SSC CGL level Solution Set 66 on Time-Work Work-Wages Pipes-Cisterns 5

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This is the 66th solution set of 10 practice problem exercise for SSC CGL exam and 5th on related topics Time-Work, Work-Wages, and Pipes-Cisterns. Students must complete the corresponding question set in prescribed time first and then only refer to this solution set for gaining maximum benefits from this resource...

SSC CGL level Solution Set 59, Fractions square roots and surds 3

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This is the 59th solution set of 10 practice problem exercise for SSC CGL exam and 3nd on topic fractions, square roots and surds. Students must complete the corresponding question set in prescribed time first and then only refer to this solution set for extracting maximum benefits from this resource...

How to solve difficult SSC CGL algebra problems in a few steps 14

thumb_How to solve difficult SSC CGL algebra problems in a few steps 14

Usually we solve difficult Algebra problems in a few steps using basic and rich Algebra concepts together with powerful general problem solving techniques visualizing the solution in the beginning itself. But this problem required more of deductive reasoning, mathematical reasoning, and exploratory application of core algebraic concepts such as symmetry in algebraic expressions, variable number reduction by component expression substitution and secondary term value sharing...

Reverse cheque puzzle

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Bhabababu received double the money he wrote in his cheque... His alert mind quickly got to the heart of the mystery. It was a simple but grave mistake made by the cashier...but again, Bhabababu knew what he wrote in his cheque, you don't. Nevertheless, if you devote a bit of interested time, you would surely know. It is not difficult on the surface...

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