easy Set 89 Form Exercise

? → [×3] → 9

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Answer: 3

SubType
find-input
Rule
×3
Input
3
Output
9
Difficulty
easy

Input: 3 → [?] → 13, what is the rule?

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Answer: +10

SubType
find-rule
Rule
+10
Input
3
Output
13
Difficulty
easy

Input: 8 → [?] → 7, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
8
Output
7
Difficulty
easy

Input: 6 → [-1] → ?

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Answer: 5

SubType
find-output
Rule
-1
Input
6
Output
5
Difficulty
easy

? → [+2] → 10

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Answer: 8

SubType
find-input
Rule
+2
Input
8
Output
10
Difficulty
easy

? → [×3] → 12

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Answer: 4

SubType
find-input
Rule
×3
Input
4
Output
12
Difficulty
easy

? → [×3] → 3

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Answer: 1

SubType
find-input
Rule
×3
Input
1
Output
3
Difficulty
easy

Input: 7 → [?] → 9, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
7
Output
9
Difficulty
easy