medium Set 59 Form Exercise

? → [×2] → 4

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Answer: 2

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

? → [×3 - 2] → 28

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Answer: 10

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

Input: 3 → [?] → 7, what is the rule?

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Answer: ×2 + 1

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

Input: 9 → [?] → 27, what is the rule?

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Answer: ×3

SubType
find-rule
Rule
×3
Input
9
Output
27
Difficulty
medium

Input: 5 → [?] → 18, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
5
Output
18
Difficulty
medium

? → [×3] → 15

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Answer: 5

SubType
find-input
Rule
×3
Input
5
Output
15
Difficulty
medium

Input: 2 → [×2] → ?

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Answer: 4

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

Input: 7 → [+5] → ?

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Answer: 12

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