medium Set 38 Form Exercise

Input: 7 → [?] → 17, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
7
Output
17
Difficulty
medium

? → [+4 ×2] → 16

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Answer: 4

SubType
find-input
Rule
+4 ×2
Input
4
Output
16
Difficulty
medium

Input: 4 → [-3] → ?

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Answer: 1

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

? → [×5] → 30

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Answer: 6

SubType
find-input
Rule
×5
Input
6
Output
30
Difficulty
medium

Input: 2 → [×3] → ?

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Answer: 6

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

? → [×3] → 9

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Answer: 3

SubType
find-input
Rule
×3
Input
3
Output
9
Difficulty
medium

Input: 2 → [+4 ×2] → ?

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Answer: 12

SubType
find-output
Rule
+4 ×2
Input
2
Output
12
Difficulty
medium

Input: 4 → [×2 + 1] → ?

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Answer: 9

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