Question

true or false :=

1. zero is not a positive or negative whole number
2. every real number is irrational number.
3. a definite rational numbers exist between 2/3 and 8/9.
4. √2+1 is a rational number.
5. if a and b are natural number, than (√a + √b) (√a -√b) is a rational number.
6. product of rational and irrational number is rational number.

Answer 1

1. true

2. true

3. false

4. true

5. false

6. false