hard Set 58 Form Exercise

Input: 4 → [?] → 9, what is the rule?

Show answer

Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
4
Output
9
Difficulty
hard

? → [+2] → 5

Show answer

Answer: 3

SubType
find-input
Rule
+2
Input
3
Output
5
Difficulty
hard

? → [+4 ×2] → 24

Show answer

Answer: 8

SubType
find-input
Rule
+4 ×2
Input
8
Output
24
Difficulty
hard

Input: 4 → [×3] → ?

Show answer

Answer: 12

SubType
find-output
Rule
×3
Input
4
Output
12
Difficulty
hard

Input: 4 → [?] → 12, what is the rule?

Show answer

Answer: ×3

SubType
find-rule
Rule
×3
Input
4
Output
12
Difficulty
hard

Input: 2 → [+10] → ?

Show answer

Answer: 12

SubType
find-output
Rule
+10
Input
2
Output
12
Difficulty
hard

Input: 9 → [?] → 19, what is the rule?

Show answer

Answer: +10

SubType
find-rule
Rule
+10
Input
9
Output
19
Difficulty
hard

Input: 8 → [×2] → ?

Show answer

Answer: 16

SubType
find-output
Rule
×2
Input
8
Output
16
Difficulty
hard