44 - you have two 44: natural numbers and integers; it is true, but in this case correct one is natural numbers 7/3 - rational numbers √144 = 12 - natural numbers -88 - integers 12/2 = 6 - natural numbers 5.4 - rational numbers √24 - irrational numbers
5) First part (perfect square) is true, but only for a square root. You could have cube root or even n-th root and in this case it won't work. For the second part when a number forever repeats it is a fraction, so it is a rational number. Irrational numbers are infinite, but they never repeat.