hard Set 34 Form Exercise

? → [×2] → 12

Show answer

Answer: 6

SubType
find-input
Rule
×2
Input
6
Output
12
Difficulty
hard

? → [+4 ×2] → 18

Show answer

Answer: 5

SubType
find-input
Rule
+4 ×2
Input
5
Output
18
Difficulty
hard

? → [+2] → 10

Show answer

Answer: 8

SubType
find-input
Rule
+2
Input
8
Output
10
Difficulty
hard

? → [×2 + 1] → 5

Show answer

Answer: 2

SubType
find-input
Rule
×2 + 1
Input
2
Output
5
Difficulty
hard

Input: 7 → [-3] → ?

Show answer

Answer: 4

SubType
find-output
Rule
-3
Input
7
Output
4
Difficulty
hard

Input: 2 → [?] → 7, what is the rule?

Show answer

Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
2
Output
7
Difficulty
hard

? → [+5] → 10

Show answer

Answer: 5

SubType
find-input
Rule
+5
Input
5
Output
10
Difficulty
hard

Input: 7 → [?] → 9, what is the rule?

Show answer

Answer: +2

SubType
find-rule
Rule
+2
Input
7
Output
9
Difficulty
hard