medium Set 71 Form Exercise

? → [×2] → 18

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Answer: 9

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

? → [+5] → 6

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Answer: 1

SubType
find-input
Rule
+5
Input
1
Output
6
Difficulty
medium

Input: 7 → [-3] → ?

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Answer: 4

SubType
find-output
Rule
-3
Input
7
Output
4
Difficulty
medium

? → [+2] → 4

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Answer: 2

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

Input: 7 → [?] → 19, what is the rule?

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Answer: ×3 - 2

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

Input: 9 → [?] → 6, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
9
Output
6
Difficulty
medium

? → [×3] → 6

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Answer: 2

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

Input: 2 → [+10] → ?

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Answer: 12

SubType
find-output
Rule
+10
Input
2
Output
12
Difficulty
medium