The set of irrational numbers

1
choose the correct answer
2
choose the correct answer
3
the number 0 belongs to...
4
the number -0.7 belongs to
5
choose the correct answer
6
choose the correct answer
7
choose the correct answer
8
choose the correct answer
9
check the statement
10
check the statement
11
check the statement
12
check the statement
13
check the statement
14
check the statement
15
check the statement
16
check the statement
17

18
choose the correct answer from a, b, c or d
19
choose the correct answer from a, b, c or d
20
choose the correct answer from a, b, c or d