## 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…

## Tips and Tricks to simplify algebra problems

(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 =…

## Tricks to solve Aptitude Problems – Profit and Loss

IMPORTANT FACTS Cost Price: The price, at which an article is purchased, is called its cost price, abbreviated as C.P. Selling Price: The price, at which an…

## Tips and Tricks on H.C.F and L.C.M

Factors and Multiples:If number a divided another number b exactly, we say that a is a factor of b.In this case, b is called a multiple of a. Highest Common Factor (H.C.F.) or Greatest Common Measure (G.C.M.) or Greatest…

## Tricks to Solve Problems on Square Root & Cube Root

Square Root If x2 = y, we say that the square root of y is x and we write √y = (+/-)x Thus, √4 = 2, -2 √9 = 3, -3 √196 = 14, -14 Cube Root: The…

## Tricks to solve partnership related questions in Aptitude Section

Partnership:When two or more than two persons run a business jointly, they are called partners and the deal is known as partnership. Ratio of Divisions of Gains: When…

## विद्युत: बोर्ड परीक्षा के लिए महत्वपूर्ण नोट्स

आवेश – आवेश परमाणु का एक मूल्य कण होता हैं l यह धनात्मक भी हो सकता हैं और ऋणात्मक भी l समान आवेश एक-दूसरे को…

## How do Organisms Reproduce : Short Notes And Board Exam Questions

How do Organisms Reproduce • Reproduction is the process by which living organisms produce new individuals similar to themselves. It ensures continuity of life on…

## नोट्स : रासायनिक अभिक्रियाएं एवं समीकरण

कक्षा 10 बोर्ड परीक्षा के लिए रासायनिक अभिक्रियाएँ एवं समीकरण पर  नोट्स और वीडियो व्याख्यान (पढ़ते चलो बढ़ते चलो – eckovation )। आईआईटी दिल्ली से…

## प्रकाश- परावर्तन तथा अपवर्तन (महत्वपूर्ण प्रश्नावली)

महत्वपूर्ण प्रश्नावली   1. यदि समतल दर्पण का आवर्धन…