Skip to main content




Do you have questions about Math?

Log in to ask questions about Math publicly or anonymously.

How many two-digit numbers can be formed from the numbers 1,2,3,4 is repetirion is allowed



We have, two cubes of side a.
These two cubes are joined face-to-face, 

then the resultant solid figure is a cuboid which has same breadth and height as the joined cubes has length twice of the length of a cube, i.e. 

l = 2a, 

b= a and&n... (More)

Definition of Primary Data

Primary data is data originated for the first time by the researcher through direct efforts and experience, specifically for the purpose of addressing his research problem. Also known as the first hand or raw data. Primary... (More)


In geometry, area can be defined as the space occupied by a flat shape or the surface of an object.  

The area of a figure is the number of unit squares that cover the surface of a closed figure. Area is measured in square units.

The area o... (More)