elementary boarding school

Elementary transformations are of the following three types: Interchange of any two rows (or columns) The multiplication of the elements of a row (or column) by a non-zero number. The addition to the elements of any row (or column) the corresponding elements of any other row (or ..

: Curved surfaces can reflect sound waves. This reflection of sound waves is used in auditorium to spread the waves uniformly throughout the hall. Reflection of sound waves is done by using Sound Boards. The speaker is located at the focus of the sound board..

In optical microscope, the ray of light can be bent by a lens system. By placing the object and the lens system in such a way, we control the direction of the ray to get a magnified image of the object. Since as 'electron' carriers charge it is possible to change the direction of a electron beam by..

If the electronic compounds like resistors, capacitors, diodes and transistors are compactly put in a small piece of material, it is called as integrated circuit. This single small package performs a complete electronic function. Thin slice of crystal of silicon of the order of 0.5 cm, are cal..

A square board has a side measuring 14 inches in length. Find the area of the board. => 206 square inches or 196 square inches or 186 square inches or 28 square inches..

Josh wants to make an advertisement board similar to another advertisement board, which has a length and width of 18 feet and 12 feet. He wants to have a length of 12 feet for the new board. What will be the width of the board that he wants to make? => 10 fee..

The enrollments made in elementary schools and high schools from 1994 through 1998 is shown in the double bar graph. Which year has the maximum difference between enrollments of high schools and elementary schools? => 1994 or 1997 or 1995 ..

Andy wants to make an advertisement board similar to another advertisement board, whose length and width are 21 feet and 14 feet. He wants to make a board of length 15 feet. What will be the width of the board that he wants to make? => 12 feet or 10 feet or 9..

The probability that a dart thrown at the square board ABCD lands on the shaded portion is => 1 10 or 1 6 or 1 5 or 1 8..

55 people were traveling by a bus; the bus stopped due to a technical snag in the engine. 40 of them boarded another bus. What percent of people boarded another bus? => 77.73% or 72.73% or 80.73% or 67.73%..