medium Set 16 Form Exercise

? → [-1] → 8

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Answer: 9

SubType
find-input
Rule
-1
Input
9
Output
8
Difficulty
medium

? → [+4 ×2] → 28

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Answer: 10

SubType
find-input
Rule
+4 ×2
Input
10
Output
28
Difficulty
medium

? → [×3] → 6

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Answer: 2

SubType
find-input
Rule
×3
Input
2
Output
6
Difficulty
medium

Input: 7 → [?] → 15, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
7
Output
15
Difficulty
medium

? → [+10] → 17

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Answer: 7

SubType
find-input
Rule
+10
Input
7
Output
17
Difficulty
medium

? → [+5] → 8

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Answer: 3

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

Input: 8 → [?] → 24, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
8
Output
24
Difficulty
medium