medium Set 13 Form Exercise

? → [+2] → 11

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Answer: 9

SubType
find-input
Rule
+2
Input
9
Output
11
Difficulty
medium

Input: 4 → [×2 + 1] → ?

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Answer: 9

SubType
find-output
Rule
×2 + 1
Input
4
Output
9
Difficulty
medium

? → [×2 + 3] → 7

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Answer: 2

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

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

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Answer: +2

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

? → [+4 ×2] → 22

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Answer: 7

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

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
medium

? → [+5] → 12

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Answer: 7

SubType
find-input
Rule
+5
Input
7
Output
12
Difficulty
medium

Input: 8 → [×3 - 2] → ?

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Answer: 22

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