Question

why does we can't divide a no. by zero

Answer 1

In ordinary arithmetic, the expression has no meaning, as there is no number which, multiplied by 0, gives a (assuming a≠0), and so division by zero is undefined. Since any number multiplied by zero is zero, the expression 0/0 is also undefined; when it is the form of a limit, it is an indeterminate form.

Answer 2

why we can not divide any number by 0?

Technically, dividing by zero is a division operation where the divisor or denominator is zero. We can express this division formally as as a/0 {a over zero} where a is the dividend (numerator). For mathematics, the expression a/0 has no meaning.

Definition of Numerator: The number above the line in a common fraction showing how many of the parts indicated by the denominator are taken, for example, 2 in 2/3.

Such an important property: Zero times anything must be zero.