expert Set 12 Form Exercise

? → [×2 + 3] → 7

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Answer: 2

SubType
find-input
Rule
×2 + 3
Input
2
Output
7
Difficulty
expert

Input: 7 → [?] → 9, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
7
Output
9
Difficulty
expert

? → [×3 - 2] → 16

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Answer: 6

SubType
find-input
Rule
×3 - 2
Input
6
Output
16
Difficulty
expert

Input: 8 → [?] → 40, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
8
Output
40
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

? → [×5] → 20

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Answer: 4

SubType
find-input
Rule
×5
Input
4
Output
20
Difficulty
expert

Input: 4 → [+4 ×2] → ?

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Answer: 16

SubType
find-output
Rule
+4 ×2
Input
4
Output
16
Difficulty
expert