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.
15555
15555
0.15555 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 15555/100000. You can simplify this rational fraction if required.
If that is a terminating decimal, then: 0.015555 = 15555/1000000 = 3111/200000 If that is meant to be a recurring decimal with the single digit 5 recurring: 0.01555... = ((0.01555... × 10) - 0.01555...)/(10 - 1) = (0.1555... - 0.01555...)/9 = 0.14/9 = 14/900 = 7/450
It is a rational number. It can be written as a fraction.
yes
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, the sum is always rational.
10,000+5,000+500+50+5
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.