Question

Indicate whether the following statements are True (T) or False (F).
1. √49 is a rational number
2. 2 is a real number
3. π is a real number
4. -17 is an integer
5. √3 is a rational number
6. 0 is a natural number
7. 32 is an integer

Answer 1

1.  False because a rational is a fraction or part of a number ($\frac{3}{2}, 3.2$).  $\sqrt{49} = 7$

2.  True; a real number is any number that isn't imaginary ($i, \sqrt{-1}$)

3.  True; same reason

4.  True; an integer is any number that can be wrote without a fraction or decimal (the opposite of rational).

5.  True; $\sqrt{3} \approx 1.32$ and that's a decimal.

6.  True;  the natural number system starts from 0 and counts upwards

7.  True;  reason above