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# Maths

### Problems on Percentage (MCQs)

Percentage maths problems with detailed solutions. Problems that deal with percentage increase and decrease as well as problems of percent of quantities.

### Profit and Loss Problems (MCQs)

Profit and Loss Problems (Objective Type Questions) for SSC CGL & CHSL, Banking and all government general competitions.

### Theory: Mensuration

Important Formulas of Mensuration (2-D Figures) (3-D Figures) Some Important Formulas Theory on Mensuration..Area and Volume formula of Pyramid Tetrahedron Prism , Cylinder Cuboid Spherical Shell Cone Frustrum Important Unit Conversions

### Algebraic Expressions and Identities

Important Algebraic Expressions and Identities :- a3 - b3 = (a - b) (a2 + b2 + ab) (a + b)3 = a3 + b3 + 3a2b + 3ab2 (a - b)3 = a3 - b3 - 3a2b + 3ab2 a3 + b3 = (a + b)3 - 3ab (a + b)

### Theory: Average

Important Facts and Formulas - Average Definition- The number of quantities of the same kind is their sum divided by the number of the quantities.

### Theory : Boat and Stream

Up Stream - It means the boat is moving against the direction of the stream. Down Stream – It means the boat is moving in the direction of the stream. Shortcut tricks on boats and streams are one of the most important topics in exams. Time takes a huge part in competitive exams.

### Theory : Partnership

Important Concepts of Partnership When the investment is made for the same time period by all the partners, the gain or loss is distributed in the ratio of their investments