Wht is multiplication and division?
Answers
Answer:
Multiplication means '×' into krna......aur division means divide krna'÷'
Addition, subtraction, multiplication and division are the four basic operations of . They are binary operators. They each take two numbers to produce a third number and are normally written with infix notation:
- Addition a+b
- Subtraction a−b
- Multiplication a×b or a⋅b or ab
- Division a÷b or a/b or ab
The "minus" symbol for subtraction is sometimes used as a unary operator to get the additive inverse of a number. The of a number, a , is the number b such that:
a+b=b+a=0
a+b=b+a=0 ⇒b=−a
We do not have such a handy notation for the which is the number b such that:
a×b=b×a=1
a×b=b×a=1 ⇒b=1/a
so instead we write b=a−1 somewhat abusing the notation for exponentiation which is not considered one of the basic arithmetic operations:
Exponentiation ab=a×a×⋯×a
One final aside in regard to division, it is best to consider it to be defined in terms of multiplication and the multiplicative inverse:
a÷b≡a×b−1
There is no multiplicative inverse for the additive identity (zero) so, by definition, division by zero is undefined and meaningless (especially for 0÷0 ).