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MD:AYUB ALI
ASSISTANT
PROF.(MATHEMATICS)
GOVT. TITUMIR
COLLEGE,DHAKA
REAL NUMBER SYSTEM
Q.WHAT IS REAL NUMBER SYSTEM?
THE SET OF RATIONAL NUMBERS AND IRRATIONAL
NUMBERS ARE CALLED THE SET OF REAL
NUMBERS.
Example-2,4,7, 5,
3
7 etc.
Q.What is rational number?
A NUMBER WHICH CAN BE REPRESENTED AS
๐‘
๐‘ž
,
P and q are any integers,qโ‰ 0, is called a rational number.
The set of rational numbers
Is denoted by Q.Example-2,4,
2
5
,
7
9
etc.rational numbers.
Q.What is irrational number.
Ans. A real number which cannot be represened as
๐‘
๐‘ž
,p,q
are any integers qโ‰ 0 is called a irrational
number.Example- 5,
3
7 .
What is the set of integers?
Ans= The positive & negative whole numbers including 0 is called the set of
integers .It is denoted by โ„ค = {0, ยฑ1, ยฑ2, ยฑ3, โ€ฆ โ€ฆ }.
What is the set of natural numbers?
Ans= The positve integers excluding 0 is called the set of natural numbers .
It is denoted by โ„• = {1,2,3,4 โ€ฆ . }.
What is prime numbers?
Ans= A number ๐‘ƒ > 1 is called a prime number, which is divisible by P &
ยฑ 1 . Example- 2,5,7,11 etc. The number of prime numbers are infinite.
What is composite numbers?
Ans= The numbers except 1 of the set of natural numbers which are not
prime is called composite numbers. Example- 4,6,8,9,10 etc.
THANK
YOU VERY
MUCH

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Ayub

  • 3. REAL NUMBER SYSTEM Q.WHAT IS REAL NUMBER SYSTEM? THE SET OF RATIONAL NUMBERS AND IRRATIONAL NUMBERS ARE CALLED THE SET OF REAL NUMBERS. Example-2,4,7, 5, 3 7 etc. Q.What is rational number? A NUMBER WHICH CAN BE REPRESENTED AS ๐‘ ๐‘ž , P and q are any integers,qโ‰ 0, is called a rational number. The set of rational numbers Is denoted by Q.Example-2,4, 2 5 , 7 9 etc.rational numbers. Q.What is irrational number. Ans. A real number which cannot be represened as ๐‘ ๐‘ž ,p,q are any integers qโ‰ 0 is called a irrational number.Example- 5, 3 7 .
  • 4. What is the set of integers? Ans= The positive & negative whole numbers including 0 is called the set of integers .It is denoted by โ„ค = {0, ยฑ1, ยฑ2, ยฑ3, โ€ฆ โ€ฆ }. What is the set of natural numbers? Ans= The positve integers excluding 0 is called the set of natural numbers . It is denoted by โ„• = {1,2,3,4 โ€ฆ . }. What is prime numbers? Ans= A number ๐‘ƒ > 1 is called a prime number, which is divisible by P & ยฑ 1 . Example- 2,5,7,11 etc. The number of prime numbers are infinite. What is composite numbers? Ans= The numbers except 1 of the set of natural numbers which are not prime is called composite numbers. Example- 4,6,8,9,10 etc.