Tips and Tricks on 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 to…
Problem solving tricks on sales and discount
IMPORTANT CONCEPTS Suppose a man has to pay Rs. 156 after 4 years and the rate of interest is 14% per annum. Clearly, Rs. 100…
Tips and Tricks on Bank Account
IMPORTANT CONCEPTS Banker’s Discount: Suppose a merchant A buys goods worth, say Rs. 10,000 from another merchant B at a credit of say 5 months.…
Tips and Tricks To Solve Problems on Races and Games
Races: A contest of speed in running, riding, driving, sailing or rowing is called a race. Race Course: The ground or path on which contests are made…
Missing Letter Puzzle for Interviews, Placement and Competitive Exams
MISSING LETTER PUZZLES Answer : K Explanation : The numerical values of the letters in opposite segments of the circle always add up to 17.…
Missing Number puzzles: Interviews, Placements and Competitive Exams
MISSING NUMBER PUZZLES Answer : 6 Explanation : Looking at the diagram in rows, the central circle equals half the sum of the numbers…
Shortcuts on Square Roots and Cube Roots
Square Roots and Cube Roots To find the square root of a number, you want to find some number that when multiplied by itself gives you the…
Lateral Thinking Puzzles
LATERAL THINKING PUZZLES LATERAL THINKING:The solving of problems by an indirect and creative approach, typically through viewing the problem in a new and unusual light.…
Important algebra identities and questions
Some Basic Formulae: (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)…
Tips and Tricks to solve aptitude problems on Mixtures 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 to…