Successor and predecessor:To find the predecessor of a number, subtract 1 from the given number. To find the successor of a number add 1 to the given number. For example: Find the predecessor and successor of 125678. Predecessor $= 125678 - 1 = 125677$. Successor $= 125678 + 1 = 125679$.

The full form of AIDS is Acquired Immuno Deficiency Syndrome.

Square Numbers:When a number is multiplied by itself, the product is called a ‘Square Number’.Properties of Square Numbers: The following are the properties of the square numbers:  A number with 2, 3, 7 or 8 at unit’s place should never be a perfect square. In other words, none of the ... Read More

Cells are the building blocks or basic fundamental unit of life. When cells of a similar structure and function combine with each other they form tissue.

Given:In an Isosceles triangle, the vertex angle is twice either base angle.To do :We have to find the angles and represent the situation as an equation.Solution :Let each base angle be b°.This implies, The measure of the vertex angle $= 2(b)° = 2b°$We know that, The sum of the angles ... Read More

Plastics are a wide range of synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects. Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerization or polycondensation process. Plastics are derived from natural, organic materials ... Read More

Abscissa:Abscissa or the x-coordinate of a point is its distance from the y-axis and the ordinate or the y-coordinate is its distance from the x-axis.(x, y) are called the coordinates of the point whose abscissa is x and the ordinate is y.

The to and fro motion of a body about a fixed point is called oscillatory motion. If there are no resistance forces, the body continues its movement forever. There are two types of oscillations: linear oscillation and circular oscillation.Examples of linear oscillation 1) Oscillation of a floating cylinder. 2) ... Read More

Given: $\left(\frac{2}{5}a\ -\ \frac{1}{2}b\right)(10a\ -\ 8b)$To find: Here we have to find the value of the given expression $\left(\frac{2}{5}a\ -\ \frac{1}{2}b\right)(10a\ -\ 8b)$.Solution:$\left(\frac{2}{5} a\ -\ \frac{1}{2} b\right) (10a\ -\ 8b)$$=\ 10a\left(\frac{2}{5} a\ -\ \frac{1}{2} b\right) \ -\ 8b\left(\frac{2}{5} a\ -\ \frac{1}{2} b\right)$$=\ \left( 10a\ \times \ \frac{2}{5} a\right) \ -\ \left( ... Read More

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.Both metals and nonmetals take part in displacement reactions. It can be represented generically as A + B - C → A - C + B.This will most often occur if A ... Read More