expert Set 40 Form Exercise

Input: 6 → [+4 ×2] → ?

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Answer: 20

SubType
find-output
Rule
+4 ×2
Input
6
Output
20
Difficulty
expert

Input: 4 → [×3] → ?

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Answer: 12

SubType
find-output
Rule
×3
Input
4
Output
12
Difficulty
expert

? → [×2 + 3] → 15

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Answer: 6

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

? → [+2] → 6

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Answer: 4

SubType
find-input
Rule
+2
Input
4
Output
6
Difficulty
expert

Input: 3 → [?] → 6, what is the rule?

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Answer: ×2

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

Input: 7 → [+2] → ?

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Answer: 9

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

? → [×2 + 1] → 13

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Answer: 6

SubType
find-input
Rule
×2 + 1
Input
6
Output
13
Difficulty
expert

Input: 10 → [+4 ×2] → ?

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Answer: 28

SubType
find-output
Rule
+4 ×2
Input
10
Output
28
Difficulty
expert