expert Set 31 Form Exercise

Input: 6 → [?] → 12, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
6
Output
12
Difficulty
expert

Input: 7 → [?] → 4, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
7
Output
4
Difficulty
expert

Input: 2 → [+4 ×2] → ?

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Answer: 12

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

Input: 3 → [?] → 13, what is the rule?

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Answer: +10

SubType
find-rule
Rule
+10
Input
3
Output
13
Difficulty
expert

? → [+2] → 10

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Answer: 8

SubType
find-input
Rule
+2
Input
8
Output
10
Difficulty
expert

Input: 7 → [?] → 35, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
7
Output
35
Difficulty
expert

Input: 10 → [×2 + 3] → ?

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Answer: 23

SubType
find-output
Rule
×2 + 3
Input
10
Output
23
Difficulty
expert

? → [×3 - 2] → 22

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Answer: 8

SubType
find-input
Rule
×3 - 2
Input
8
Output
22
Difficulty
expert