medium Set 25 Form Exercise

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

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Answer: ×2

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

Input: 7 → [×3 - 2] → ?

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Answer: 19

SubType
find-output
Rule
×3 - 2
Input
7
Output
19
Difficulty
medium

Input: 2 → [×5] → ?

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Answer: 10

SubType
find-output
Rule
×5
Input
2
Output
10
Difficulty
medium

Input: 7 → [?] → 6, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
7
Output
6
Difficulty
medium

? → [+2] → 5

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Answer: 3

SubType
find-input
Rule
+2
Input
3
Output
5
Difficulty
medium

? → [+5] → 9

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Answer: 4

SubType
find-input
Rule
+5
Input
4
Output
9
Difficulty
medium

? → [-1] → 9

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Answer: 10

SubType
find-input
Rule
-1
Input
10
Output
9
Difficulty
medium

Input: 9 → [×2 + 3] → ?

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Answer: 21

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