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  • Problems On Numbers
    Simple problems: 1 .What least number must be added to 3000 to obtain a number exactly divisible by 19? Solution: On dividing 3000 ...
  • Problems On Ages
    Simple problems: 1 .The present age of a father is 3 years more than three times   the age of his son.Three years hence,father's...
  • Profit & Loss
    Important Facts: Cost Price: The price at which an article is purchased, is called its cost price,abbreviated as C.P. Selling Pri...
  • Percentage Count
    PERCENTAGES :- By a certain percent, we mean that many hundredths. Thus x  percent means x hundredths written as x% .                  ...
  • Puzzles
    Introduction : Puzzles  are dealt in a detailed manner with certain solutions. Different puzzles are gathered from Shakuntala Devi pu...
  • Concept of Trigonometry
    Important Facts and Formula: Results On Triangle 1 .Sum of the angles of a triangle is 180 degrees. 2 .The sum of any two si...
  • Probability Concept
    EXPERIMENT : An operation which can produce some well-defined outcome is called an experiment. RANDOM EXPERIMENT : An experiment in ...
  • Reasoning Preparation
    CLASSIFICATION TYPE Read the following information carefully and answer the questions that follow: 1) There are six cities A,B,C,D...
  • Area concept
    Important Facts and Formula: RESULTS ON TRIANGLE 1.Sum of the angles of a triangle is 180 degrees. 2.The sum of any two sides of a t...
  • Permutation & Combinations Concept
    Factorial Notation: Let n be positive integer.Then, factorial n denoted by n! is defined as n! = n(n-1)(n-2). . . .  . . .  .3.2.1     ...