expert Set 41 Form Exercise

Input: 2 → [?] → 5, what is the rule?

Show answer

Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
2
Output
5
Difficulty
expert

Input: 8 → [?] → 10, what is the rule?

Show answer

Answer: +2

SubType
find-rule
Rule
+2
Input
8
Output
10
Difficulty
expert

Input: 5 → [×5] → ?

Show answer

Answer: 25

SubType
find-output
Rule
×5
Input
5
Output
25
Difficulty
expert

Input: 5 → [+4 ×2] → ?

Show answer

Answer: 18

SubType
find-output
Rule
+4 ×2
Input
5
Output
18
Difficulty
expert

? → [+4 ×2] → 28

Show answer

Answer: 10

SubType
find-input
Rule
+4 ×2
Input
10
Output
28
Difficulty
expert

Input: 2 → [?] → 12, what is the rule?

Show answer

Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
2
Output
12
Difficulty
expert

Input: 4 → [+10] → ?

Show answer

Answer: 14

SubType
find-output
Rule
+10
Input
4
Output
14
Difficulty
expert

? → [-3] → 3

Show answer

Answer: 6

SubType
find-input
Rule
-3
Input
6
Output
3
Difficulty
expert