Multiplicative inverse.
Every number multiplied by its reciprocal produce 1.
Every number does not. 0 is a number and it does not have a reciprocal.
Every number can be multiplied by 19.Every number can be multiplied by 19.Every number can be multiplied by 19.Every number can be multiplied by 19.
No. 0 is rational and has no reciprocal.
Any and every rational number.
Every number multiplied by its reciprocal produce 1.
Every number except zero has a reciprocal.
Every number does not. 0 is a number and it does not have a reciprocal.
It is not a prime number. Every number is a multiple of one. Its reciprocal is still one, anything multiplied or divided by one is still the original number.
Every number can be multiplied by 19.Every number can be multiplied by 19.Every number can be multiplied by 19.Every number can be multiplied by 19.
Not just every whole number. Every number has a reciprocal, even 0. The reciprocal of 0 is undefined.
No, 0 does not have a reciprocal, yet 0 is a real number.
No. 0 is rational and has no reciprocal.
There is no such number. Every number can be multiplied by 3 and every number can be multiplied by 4.
Every number except ZERO because 1/0 = Infinity which isn't really a number
Every irrational number, when multiplied by 0.4 will produce an irrational number.
Every number