medium Set 27 Form Exercise

? → [×2 + 1] → 7

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Answer: 3

SubType
find-input
Rule
×2 + 1
Input
3
Output
7
Difficulty
medium

Input: 9 → [+5] → ?

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Answer: 14

SubType
find-output
Rule
+5
Input
9
Output
14
Difficulty
medium

? → [×2] → 4

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Answer: 2

SubType
find-input
Rule
×2
Input
2
Output
4
Difficulty
medium

? → [-1] → 3

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Answer: 4

SubType
find-input
Rule
-1
Input
4
Output
3
Difficulty
medium

? → [+2] → 5

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Answer: 3

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

Input: 10 → [?] → 28, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
10
Output
28
Difficulty
medium

? → [×2] → 12

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Answer: 6

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

Input: 6 → [?] → 3, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
6
Output
3
Difficulty
medium