medium Set 50 Form Exercise

Input: 5 → [?] → 13, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
5
Output
13
Difficulty
medium

Input: 7 → [+5] → ?

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Answer: 12

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

Input: 4 → [?] → 20, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
4
Output
20
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

? → [+10] → 12

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Answer: 2

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

Input: 6 → [?] → 15, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
6
Output
15
Difficulty
medium

Input: 6 → [-3] → ?

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Answer: 3

SubType
find-output
Rule
-3
Input
6
Output
3
Difficulty
medium

Input: 10 → [?] → 21, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
10
Output
21
Difficulty
medium