medium Set 90 Form Exercise

Input: 7 → [?] → 12, what is the rule?

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Answer: +5

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

Input: 9 → [?] → 19, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
9
Output
19
Difficulty
medium

? → [+4 ×2] → 22

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Answer: 7

SubType
find-input
Rule
+4 ×2
Input
7
Output
22
Difficulty
medium

? → [-3] → 7

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Answer: 10

SubType
find-input
Rule
-3
Input
10
Output
7
Difficulty
medium

? → [×2 + 1] → 9

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Answer: 4

SubType
find-input
Rule
×2 + 1
Input
4
Output
9
Difficulty
medium

Input: 4 → [×3 - 2] → ?

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Answer: 10

SubType
find-output
Rule
×3 - 2
Input
4
Output
10
Difficulty
medium

? → [+4 ×2] → 16

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Answer: 4

SubType
find-input
Rule
+4 ×2
Input
4
Output
16
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