expert Set 26 Form Exercise

? → [+4 ×2] → 18

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Answer: 5

SubType
find-input
Rule
+4 ×2
Input
5
Output
18
Difficulty
expert

? → [-3] → 6

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Answer: 9

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

Input: 4 → [?] → 1, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
4
Output
1
Difficulty
expert

? → [+5] → 9

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Answer: 4

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

Input: 8 → [×2] → ?

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Answer: 16

SubType
find-output
Rule
×2
Input
8
Output
16
Difficulty
expert

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: 7 → [+5] → ?

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Answer: 12

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

? → [×3] → 6

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Answer: 2

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