16, -8,4,-2,1
-15,-18, -21.6, -25.92, -31.104,...
625, 125, 25, 5, 1,...
these are the correct ones. sorry it took so long to get an answer
Hence the name. In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers.
The number is rational because there is a pattern