expert Set 88 Form Exercise

? → [×2 + 3] → 7

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Answer: 2

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

Input: 6 → [?] → 30, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
6
Output
30
Difficulty
expert

? → [×3] → 3

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Answer: 1

SubType
find-input
Rule
×3
Input
1
Output
3
Difficulty
expert

Input: 9 → [?] → 11, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
9
Output
11
Difficulty
expert

Input: 9 → [?] → 18, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
9
Output
18
Difficulty
expert

? → [-3] → 0

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Answer: 3

SubType
find-input
Rule
-3
Input
3
Output
0
Difficulty
expert

Input: 2 → [?] → 4, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
2
Output
4
Difficulty
expert

Input: 4 → [×5] → ?

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Answer: 20

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