Monthly Archives: August 2017
Pipes and Cisterns
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...
Probability
Random Experiment: An experiment in which all possible outcomes are know and the exact output cannot be predicted in advance, is called a random experiment.
Examples:
...
Permutation and Combination
Permutation implies arrangement where order of things is important and includes word formation number formation, circular permutation etc.
All permutations (or arrangements) made with the...
Percentage and True Discount
PERCENTAGE: A percentage is defined as a number represented as a fraction of 100. Percentages are used to express numbers between zero and one. It...
Partnership
Ratio of Divisions of Gains:
When investments of all the partners are for the same time, the gain or loss is distributed among the...
Number system and number property
(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) =...
Number Series
In a simple series, the difference between two consecutive numbers is constant
Example: 27, 24, 21, 18, __
Example: 3, 4, 6,...
The unknown story of Hardik Pandya
Hardik Pandya needs no description. His dad’s support and his brothers guidance along with his determination is the secret formula for Hardik Pandya’s success....
Mixture and Alligation
Alligation: It is the rule that enables us to find the ratio in which two or more ingredients at the given price must be mixed...
Fractions and Decimals
A fraction is an expression that indicates the quotient of two quantities.
A fraction has two parts, Numerator and Denominator. Numerator is the...