medium Set 31 Form Exercise

Input: 8 → [×3 - 2] → ?

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Answer: 22

SubType
find-output
Rule
×3 - 2
Input
8
Output
22
Difficulty
medium

Input: 3 → [×2] → ?

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Answer: 6

SubType
find-output
Rule
×2
Input
3
Output
6
Difficulty
medium

Input: 1 → [×2 + 1] → ?

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Answer: 3

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

? → [-1] → 4

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Answer: 5

SubType
find-input
Rule
-1
Input
5
Output
4
Difficulty
medium

? → [×2 + 1] → 15

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Answer: 7

SubType
find-input
Rule
×2 + 1
Input
7
Output
15
Difficulty
medium

Input: 2 → [×2 + 1] → ?

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Answer: 5

SubType
find-output
Rule
×2 + 1
Input
2
Output
5
Difficulty
medium

Input: 6 → [?] → 15, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
6
Output
15
Difficulty
medium