medium Set 65 Form Exercise

Input: 9 → [×2] → ?

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Answer: 18

SubType
find-output
Rule
×2
Input
9
Output
18
Difficulty
medium

? → [×2 + 3] → 17

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Answer: 7

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

? → [×2] → 2

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Answer: 1

SubType
find-input
Rule
×2
Input
1
Output
2
Difficulty
medium

? → [×2 + 1] → 3

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Answer: 1

SubType
find-input
Rule
×2 + 1
Input
1
Output
3
Difficulty
medium

Input: 2 → [-1] → ?

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Answer: 1

SubType
find-output
Rule
-1
Input
2
Output
1
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

Input: 3 → [?] → 7, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
3
Output
7
Difficulty
medium

Input: 9 → [?] → 45, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
9
Output
45
Difficulty
medium