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.
2456 is an even, composite and a rational number
4.56 = 456/100 = 114/25 or 414/25
It is a rational number. It can be written as a fraction.
The number 456 can be represented by the Roman numeral CDLVI
yes
The number 456 is spelled "four hundred fifty-six."
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.
Yes - since the sum of the digits of the number 456 is equal to a multiple of 3, 456 is divisible by 3 - in this instance, 456/3 = 152.
Yes, the sum is always rational.
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.