expert Set 24 Form Exercise

? → [×3] → 21

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Answer: 7

SubType
find-input
Rule
×3
Input
7
Output
21
Difficulty
expert

Input: 8 → [?] → 10, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
8
Output
10
Difficulty
expert

Input: 6 → [×2 + 3] → ?

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Answer: 15

SubType
find-output
Rule
×2 + 3
Input
6
Output
15
Difficulty
expert

Input: 9 → [?] → 11, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
9
Output
11
Difficulty
expert

? → [+10] → 19

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Answer: 9

SubType
find-input
Rule
+10
Input
9
Output
19
Difficulty
expert

Input: 8 → [?] → 13, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
8
Output
13
Difficulty
expert

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

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Answer: ×5

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

? → [-1] → 2

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Answer: 3

SubType
find-input
Rule
-1
Input
3
Output
2
Difficulty
expert