medium Set 52 Form Exercise

? → [×2 + 3] → 5

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Answer: 1

SubType
find-input
Rule
×2 + 3
Input
1
Output
5
Difficulty
medium

Input: 2 → [?] → 4, what is the rule?

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Answer: +2

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

Input: 1 → [+2] → ?

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Answer: 3

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

? → [×2 + 1] → 21

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Answer: 10

SubType
find-input
Rule
×2 + 1
Input
10
Output
21
Difficulty
medium

Input: 4 → [?] → 1, what is the rule?

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Answer: -3

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

? → [×2 + 3] → 11

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Answer: 4

SubType
find-input
Rule
×2 + 3
Input
4
Output
11
Difficulty
medium

? → [-1] → 2

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Answer: 3

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

Input: 8 → [?] → 7, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
8
Output
7
Difficulty
medium