Home
About
Contact
Take IQ Test
18/20
40 + 20 - 20 + 40 - 40 = ?
Which number should replace the question mark?
0
10
20
30
40
60
SKIP QUESTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20