Given :The given statement is the least number which when divided by 20, 25, 30, and 36 leaves a remainder of 4 in each case.To do :We have to find the least number. Solution :The least number is the L.C.M. $(20, 25, 30, 35) + 4$.L.C.M. of 20, 25, 30 ... Read More

Given : The vehicle covers a distance of 22.8 km in 2.4 L of petrol. To do : We have to find the distance covered in 1 liter of petrol. Solution : The distance covered in 1 L of petrol $= \frac{22.8}{2.4} km$             ... Read More

Given :The given number is 250.To do :We have to find the square root of 250.Solution : To calculate the square root of 250, we have to use the long division method. 15.8111250.0000125  5150125308     8   2500   24643161        1         3600          3161             339 Therefore, the square root of 250 up to two decimal places is 15.81.

Centrifugation is a technique used for the separation of particles from a solution according to their size, shape, density, the viscosity of the medium and rotor speed. The particles are suspended in a liquid medium and placed in a centrifuge tube. The tube is then placed in a rotor and ... Read More

Given :The given number is 457928.To do :We have to write the number name and expansion of the given number.Solution :To expand a number we have to multiply a digit by its place value.457928 in number form is four lakh fifty-seven thousand nine hundred and twenty-eight.$457928 = 400000+50000+7000+900+20+8$The expansion of ... Read More

Given :The given equation is $2x-5=7$.To do :We have to mention the variables and constants from the given equation.Solution :$2x-5=7$Variable: A variable is denoted by a symbol that can take any real value. The value of a variable is not fixed.Constants: are terms without variables. Therefore, In $2x-5=7$, x is ... Read More

There is basically three-way to distinguish the textile fibre.1. Feel test2. Burn test3. Solubility testAmong these burning tests is most commonly used in daily application. Fibre can be distinguished according to their burning behaviour when they come in contact with flame.Wool- When it comes in contact with flame, it shrinks initially. ... Read More

Given :The given expression is $[(-2) \times[3 \times(\frac{1}{2})]]=[[(-2) \times 3] \times(\frac{1}{2})]$.To do :We have to mention the property used in the given expression.Solution :Associative property :$a \times (b \times c) = (a \times b) \times c$$(-2) \times[3 \times(\frac{1}{2})]]= -2 \times \frac{3}{2} = -3$$[[(-2) \times 3] \times(\frac{1}{2})= -6 \times \frac{1}{2} = -3$Therefore, ... Read More

The word "tissue" derives from the French word "tissu", which means something that is "woven".Tissues are groups of cells that have a similar structure that acts together to perform a specific function.The organs are formed by grouping together of multiple tissues according to their function. 1.Animal tissue- is a group of ... Read More

Given :A man is 4 times as old as his son.After 16 years, he will be only twice as old as his son.To do :We have to find their present ages.Solution :Let the age of the son be x.This implies, the age of the man $= 4x$.After 16 years, Age ... Read More