hard Set 19 Form Exercise

Input: 1 → [?] → 3, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
1
Output
3
Difficulty
hard

? → [+4 ×2] → 22

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Answer: 7

SubType
find-input
Rule
+4 ×2
Input
7
Output
22
Difficulty
hard

Input: 4 → [-1] → ?

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Answer: 3

SubType
find-output
Rule
-1
Input
4
Output
3
Difficulty
hard

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

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Answer: ×3

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

Input: 3 → [+4 ×2] → ?

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Answer: 14

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

Input: 2 → [?] → 4, what is the rule?

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Answer: +2

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

? → [+10] → 18

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Answer: 8

SubType
find-input
Rule
+10
Input
8
Output
18
Difficulty
hard

Input: 10 → [?] → 12, what is the rule?

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Answer: +2

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