expert Set 79 Form Exercise

? → [×2 + 1] → 15

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Answer: 7

SubType
find-input
Rule
×2 + 1
Input
7
Output
15
Difficulty
expert

Input: 1 → [+4 ×2] → ?

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Answer: 10

SubType
find-output
Rule
+4 ×2
Input
1
Output
10
Difficulty
expert

Input: 2 → [?] → 5, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
2
Output
5
Difficulty
expert

Input: 10 → [?] → 7, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
10
Output
7
Difficulty
expert

? → [×3 - 2] → 13

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Answer: 5

SubType
find-input
Rule
×3 - 2
Input
5
Output
13
Difficulty
expert

? → [+5] → 6

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Answer: 1

SubType
find-input
Rule
+5
Input
1
Output
6
Difficulty
expert

Input: 2 → [?] → 7, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
2
Output
7
Difficulty
expert

? → [+2] → 8

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Answer: 6

SubType
find-input
Rule
+2
Input
6
Output
8
Difficulty
expert