## Tricks to solve surds and indices

Laws of Indices: am x an = am + n am = am – n an (am)n = amn (ab)n = anbn a n = an b bn a0 = 1 Surds:Let a be rational number and n be a positive integer such…

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# Mental Ability

## Tricks to solve surds and indices

## Important Formulas of Pipes and Cistern

## Tips and Tricks related to Stocks and Shares

## Short cut tricks to find square root and cube root of a number

## Important tips to solve probability problems

## Tips to solve seating arrangement problems

## Tips to solve problems related to Chain Rule

## Tips and Tricks on Simplification related problems in Aptitude

## Tricks to solve Volume and Surface Area Problems

## Tips and Tricks to simplify algebra problems

Laws of Indices: am x an = am + n am = am – n an (am)n = amn (ab)n = anbn a n = an b bn a0 = 1 Surds:Let a be rational number and n be a positive integer such…

Inlet:A pipe connected with a tank or a cistern or a reservoir, that fills it, is known as an inlet.Outlet: A pipe connected with a…

Stock Capital:The total amount of money needed to run the company is called the stock capital. Shares or Stock:The whole capital is divided into small units,…

CUBE ROOT OF A NUMBER REMEMBERING UNITS DIGITS: First we need to remember cubes of 1 to 10 and unit digits of these cubes. The…

PROBABILITY Probability is a measure of how likely an event is to occur. Probability is expressed in the form of fractions. Favorable number of outcomes…

SEATING ARRANGEMENT In order to solve seating arrangement questions, first of all diagram should be made. By doing so questions are easily and…

Direct Proportion:Two quantities are said to be directly proportional, if on the increase (or decrease) of the one, the other increases (or decreases) to the…

‘BODMAS’ Rule:This rule depicts the correct sequence in which the operations are to be executed, so as to find out the value of given expression.Here…

CUBOID Let length = l, breadth = b and height = h units. Then Volume = (l x b x h) cubic units. Surface area = 2(lb + bh + lh) sq. units. Diagonal = l2 + b2 + h2 units. CUBE Let each edge of a…

(a + b)(a – b) = (a2 – b2) (a + b)2 = (a2 + b2 + 2ab) (a – b)2 = (a2 + b2 – 2ab) (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca) (a3 + b3) = (a + b)(a2 – ab + b2) (a3 – b3) = (a – b)(a2 + ab + b2) (a3 + b3 + c3 – 3abc) = (a + b + c)(a2 + b2 + c2 – ab – bc – ac) When a + b + c =…