Yes
yes
Yes.
yes
It must be a generalised rational number. Otherwise, if you select a rational number to multiply, then you will only prove it for that number.
Yes. Any rational number divided by another rational number is also rational.
8442 ÷ 21 = 402
It is a rational number. It can be written as a fraction.
positive 402. the absolute value makes any number positive, even if it already is. So the absolute value of -402 is 402. the absolute value of 402 is also 402.
yes
All multiples of 402, which is an infinite number.
Is 12.05 a rational number or irrational number?
1.96 is a rational number
It is a rational number, as it can be written as a fraction.
402 is divisible by 2.402 is divisible by 2.402 is divisible by 2.402 is divisible by 2.
Yes, the sum is always rational.
402 Chevrolet
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.