To express percentage as fraction- divide by 100
To express fraction as percentage- multiply by 100
Q.1 What percentage of numbers from 1 to 70 have 1 or 9
in the unit's digit?
Q.2 45 x ? = 2
WHAT IS POLLUTION?
Pollution is the introduction of contaminants
into a natural environment that causes
instability, disorder, harm or discomfort to the
ecosystem i.e. physical systems or living
WHAT ARE POLLUTANTS?
A pollutant is a wast
(A Problem )
CIV 335 Lecture #2
By:- Aditya Kanwar
We will be discussing.
Types Of Pollution.
Pollution is the introduction of
contaminants into the natural environment
Numbers and its types
Finding Given no is prime or not
Simplification(Square, Cube, Square Root, Cube Root)
Unit digit concept
Arithmetic Progression and Geometric Progression
HCF and LCM
Profit And Loss
Q. What is Profit and Loss ?
The price, at which an article is purchased, is called
itscost price, abbreviated asC.P.
The price, at which an article is sold, is called
itsselling prices, abbreviat
By: Aditya Kanwar
P (Lecture Tutorial
3 Lectures per Week
Course Communication Mode:
Origin of the word
French Word- environner
To encircle or
quantity of water required for municipal uses
for which the water supply scheme has to be
It requires the following data:
1. Water consumption rate(Per Capita Demand in
DEFINITION OF ENVIRONMENT
The natural environment comprises all living
and non-living things occurring naturally on
Earth or some region thereof.
It is an environment that encompasses the
interaction of all living species.
In the Constitution of India it is clearly stated that it is the
duty of the state to protect and improve the environment and
to safeguard the forests and wildlife of the country. It
imposes a duty on every citizen to protect and improv