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Is negative 3 a real number?
Yes negative 3 is a real number. 0 is the only number which...isn't a number. The is a political debate going on at the moment debating this particular topic!!!
Is 0 a real number?
NO, negative numbers are though. 0 is more like a placeholder. It's not a actual number. It CAN be a digit, though! Love, :D
If A and B are real numbers and A is less than 0 and B is less than 0 then is AB less than or greater than 0?
Greater than zero because any negative number times a negative number equals a positive number.
If the square root of a rational number X was divided by another rational number Y and the result would be undefined what could be the possible values of X and Y?
probably x would be negative. This is because the square root of a negative number is not a real number (no real number squared can be negative). ory is 0. any number divided by 0 = infinity. and undefined is another way of saying infinity.
Is 0 an imaginary number?
This is an interesting question. Looking at complex numbers graphically, zero is at the intersection of the real and imaginary axis, so it is 0 + 0i. But if you square zero, you get zero, which is not a negative number (a pure imaginary, when squared will give a real negative number), so I'd have to say it is not imaginary.
