expert Set 97 Form Exercise

? → [×2] → 12

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Answer: 6

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

Input: 2 → [?] → 12, what is the rule?

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Answer: +10

SubType
find-rule
Rule
+10
Input
2
Output
12
Difficulty
expert

? → [+5] → 9

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Answer: 4

SubType
find-input
Rule
+5
Input
4
Output
9
Difficulty
expert

? → [×2 + 3] → 15

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Answer: 6

SubType
find-input
Rule
×2 + 3
Input
6
Output
15
Difficulty
expert

Input: 4 → [+4 ×2] → ?

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Answer: 16

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

Input: 4 → [×2 + 3] → ?

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Answer: 11

SubType
find-output
Rule
×2 + 3
Input
4
Output
11
Difficulty
expert

Input: 8 → [×2 + 1] → ?

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Answer: 17

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

Input: 2 → [?] → 6, what is the rule?

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Answer: ×3

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