hard Set 33 Form Exercise

? → [+4 ×2] → 14

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Answer: 3

SubType
find-input
Rule
+4 ×2
Input
3
Output
14
Difficulty
hard

Input: 4 → [?] → 9, what is the rule?

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Answer: ×2 + 1

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

? → [×2] → 18

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Answer: 9

SubType
find-input
Rule
×2
Input
9
Output
18
Difficulty
hard

? → [×2 + 3] → 7

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Answer: 2

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

? → [-3] → 2

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Answer: 5

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

Input: 2 → [?] → 5, what is the rule?

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Answer: ×2 + 1

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

Input: 7 → [?] → 14, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
7
Output
14
Difficulty
hard

? → [+2] → 6

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Answer: 4

SubType
find-input
Rule
+2
Input
4
Output
6
Difficulty
hard