expert Set 40 Form Exercise

Input: 10 → [?] → 50, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
10
Output
50
Difficulty
expert

? → [+5] → 8

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Answer: 3

SubType
find-input
Rule
+5
Input
3
Output
8
Difficulty
expert

? → [×3 - 2] → 7

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Answer: 3

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

? → [×2 + 3] → 17

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Answer: 7

SubType
find-input
Rule
×2 + 3
Input
7
Output
17
Difficulty
expert

Input: 3 → [?] → 14, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
3
Output
14
Difficulty
expert

? → [×3] → 30

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Answer: 10

SubType
find-input
Rule
×3
Input
10
Output
30
Difficulty
expert

? → [+4 ×2] → 20

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Answer: 6

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

Input: 9 → [?] → 19, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
9
Output
19
Difficulty
expert