logically, if any number divided by 0 is undefined, than according to reverse
operation, undefined times zero should be any number which would make it
undefined. 0/1 x 1/0 = 0/0 which is undefined
Also, "undefined" means it's undefined. If one of the factors is not defined,
then you can't very well expect the product to be defined; now can you !
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Undefined: You cannot divide by zero
A quotient is undefined if the divisor is zero.
0 times 0 is defined as zero. The multiplication of any number times zero is zero (even an infinitely large number of null sets still have no elements). Zero times zero is zero, but the inverse operation, dividing by zero, is undefined.
The answer depends on the part of the question that is missing.
if there is 0 in the numerator it is zero regardless. But if it's zero in the denominator and zero in the numerator then it is undefined in all such cases where the denominator equals zero.