May 25, 2020

A circle is a collection of all points which are at a constant distance from a fixed point. The fixed point is called the **centre** of the circle. A line segment joining centre of the circle to a point on the circle is called **radius** of the circle.

May 23, 2020

Quadrilateral is a plane, closed, geometric figure with four sides. A quadrilateral has four sides - AB, BC, CD and DA, four angles - ∠A, ∠B, ∠C, ∠D, two diagonals - AC and BD, and four vertices - A, B, C and D.

Read more ...May 21, 2020

The angles opposite to equal sides of a triangle are equal. The sides opposite to equal angles of a triangle are equal.

Read more ...May 19, 2020

Two lines can either be parallel or intersecting. Three lines may be parallel to each other, intersect each other in exactly one point, intersect each other in two points (transversal), or intersect each other at most in three points.

Read more ...May 17, 2020

Triangles is a a plane figure bounded by three line segments. The sum of the three interior angles of a triangle is 180º.

Read more ...May 15, 2020

Line Segment is the portion of the line between two points A and B. A line segment has two end points. Ray is a line segment AB when extended in one direction.

Read more ...May 13, 2020

Percent means per every hundred and denoted by the symbol %. A fraction with denominator 100 is called a Percent.

Read more ...May 11, 2020

Sequence or progression is a group of numbers forming a pattern. Arithmetic Progression (AP) is a progression in which each term, except the first, is obtained by adding a constant to the previous term.

Read more ...May 09, 2020

Quadratic polynomial is a polynomial of degree 2. Quadratic equation is an equation having degree 2. General form of a quadratic equation is **ax ^{2} + bx + c = 0**, a ≠ 0 where a, b, c are real numbers and x is a variable.

May 07, 2020

Linear polynomial is a polynomial having degree 1. Equation means two expressions separated by sign of equality. Thus, linear equation involves only linear polynomials - An equation in which the highest power of the variable is 1.

Read more ...May 05, 2020

Algebraic expressions are a combination of constants and variables, connected by any or all of the four fundamental operations (+, -, ×, ÷).

Read more ...May 03, 2020

**Natural Numbers (N)** are Counting numbers - 1, 2, 3, 4, and so on. The smallest natural number is 1. **Whole Numbers (W)** are Natural numbers including 0 - 0, 1, 2, 3, 4 , and son on. The smallest whole number is 0.

The Union Public Service Commission (UPSC) is one of the many constitutional body in India. It conducts competitive examinations and interviews for recruitment of **civil services**, **defence services** and posts under the Union Government or Central Government. The interviews for Defence Services are conducted by Services Selection Board (SSB) of the Ministry of Defence.

**Civil Services**

Indian Civil Service serves as the backbone of Indian administrative machinery. Career in civil services offers prestigious opportunities and responsibilities. India's best minds strive for entry into the All India Civil Services as IAS (Indian Administrative Service), IFS (Indian Forest Service) and IPS (Indian Police Service) officers.