medium Set 99 Form Exercise

Input: 5 → [?] → 13, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
5
Output
13
Difficulty
medium

? → [×5] → 40

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Answer: 8

SubType
find-input
Rule
×5
Input
8
Output
40
Difficulty
medium

Input: 3 → [-3] → ?

SubType
find-output
Rule
-3
Input
3
Output
0
Difficulty
medium

? → [×5] → 35

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Answer: 7

SubType
find-input
Rule
×5
Input
7
Output
35
Difficulty
medium

Input: 7 → [+5] → ?

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Answer: 12

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

Input: 7 → [?] → 14, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
7
Output
14
Difficulty
medium

Input: 9 → [×2 + 3] → ?

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Answer: 21

SubType
find-output
Rule
×2 + 3
Input
9
Output
21
Difficulty
medium