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SSC CGL Tier II level Solution Set 27, Average 1

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This is the 27th solution set of 10 practice problem exercise for SSC CGL Tier II exam and the 1st on Average problems. 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 Tier II level Question Set 27, Average 1

thumb_SSC-CGL-Tier-II-question-set-27-average1

This is the 27th question set of 10 practice problem exercise for SSC CGL Tier II exam and the 1st on Average problems. 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 the paired solution set, one must solve many problems in a systematic manner using conceptual analytical approach exemplified in the solutions. One can learn well only by practicing learning by doing...

SSC CGL Tier II level Solution Set 26, Time and work problems 2

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This is the 26th solution set of 10 practice problem exercise for SSC CGL Tier II exam and the 2nd on Time and work problems. 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 Tier II level Question Set 26, Time and work problems 2

thumb_ssc-cgl-tier2-question-set-26-time-work-work-wages-2

This is the 26th question set of 10 practice problem exercise for SSC CGL Tier II exam and the 2nd on Time and work problems. 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 the solutions in the corresponding solution set, one must solve many problems in a systematic manner using conceptual analytical approach. One can learn well only by practicing learning by doing...

Algebraic proof of Least value of sum of reciprocals for any number of positive variables

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The result of the least value of sum of reciprocals, used in Algebra represents an important principle of value sharing.

For two positive real variables $a$ and $b$ for example, if $a+b=1$, the least value of sum of reciprocals of $a$ and $b$ will occur when the value of the sum 1 is shared equally between the two variables. This remarkable equal value sharing principle hold true for any number of variables as well as for any positive sum of the variables...

How to solve SSC CGL Surd Algebra lightning quick 17, Sum of inverses on Surd

The problem chosen in this 17th video on SSC CGL level Algebra in a few steps could be solved lightning quick all in mind by converting target expression in terms of a square of sum of inverses and then evaluating the sum of inverses using awkward looking surd variable by using the basic algebraic concepts of addition of square of sums. The deductions are explained in details. The concepts and techniques are valuable as these help to solve a large variety of algebra problems in just a few steps. The video should be useful for SSC CGL Tier II, CAT or GMAT as well...

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How to solve SSC CGL Algebra mentally in quick time 16 video, Pattern based Algebra technique

The problem chosen in this 16th video on SSC CGL level Algebra problem solving in a few steps is fairly large but could be solved in mind by first simplifying the problem expression using component expression substitution, second by identifying the critical pattern and last by applying the three-variable zero sum principle. Working of this principle based technique is explained. The concepts and techniques are valuable as these help to solve a large variety of algebra problems in just a few steps. The video should be useful for SSC CGL Tier II, CAT or GMAT as well...

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How to solve SSC CGL Algebra mentally in quick time 15 video, Patterns, Mathematical Reasoning

The problem chosen in this 15th video on SSC CGL level Algebra problem solving in a few steps is not so difficult and could be solved very quickly using pattern based mathematical reasoning. The concepts and techniques are valuable as these help to solve a large variety of algebra problems in just a few steps. The video should be useful for SSC CGL Tier II, CAT or GMAT as well...

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How to solve SSC CGL Algebra quickly in a few steps 14 video, hard algebra

A complex problem is solved in this 14th video on SSC CGL level difficult Algebra problem solving in a few steps, first by applying a general algebra problem solving technique and then by a specific pattern based powerful algebraic problem solving technique. At the end, a second simpler problem is also solved using the pattern based technique. The video should be useful for SSC CGL Tier II, CAT or GMAT as well...

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SSC CGL Algebra solving quickly 13, A novel approach

We have solved an apparently unsolvable problem in this 13th video session on SSC CGL level Algebra problem solving in a few steps. We could find no way to transform the given expression to get the value of the target expression, nor could we evaluate the values of three variables directly from the given expression. As these two main approaches by which most competitive algebra problems are solved failed, we had to resort to a novel method using trial of choice values against target expression for feasibility and then verification of the values thus obtained from the given expression. We have worked backwards. Finally, the solution was quick and satisfactory and it taught us a few new things about how to solve problems. The concepts and methods should prove valuable in addition, for SSC CGL Tier II, CAT or GMAT where algebra is a topic...

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