expert Set 69 Form Exercise

Input: 9 → [?] → 8, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
9
Output
8
Difficulty
expert

Input: 8 → [?] → 17, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
8
Output
17
Difficulty
expert

? → [×2] → 6

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Answer: 3

SubType
find-input
Rule
×2
Input
3
Output
6
Difficulty
expert

Input: 10 → [?] → 23, what is the rule?

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Answer: ×2 + 3

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

Input: 9 → [?] → 6, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
9
Output
6
Difficulty
expert

Input: 2 → [?] → 4, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
2
Output
4
Difficulty
expert

Input: 3 → [+2] → ?

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Answer: 5

SubType
find-output
Rule
+2
Input
3
Output
5
Difficulty
expert

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

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Answer: ×3

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