easy Set 68 Form Exercise

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

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Answer: +2

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

Input: 8 → [?] → 7, what is the rule?

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Answer: -1

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

Input: 9 → [-1] → ?

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Answer: 8

SubType
find-output
Rule
-1
Input
9
Output
8
Difficulty
normal

? → [-1] → 7

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Answer: 8

SubType
find-input
Rule
-1
Input
8
Output
7
Difficulty
normal

? → [×5] → 40

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Answer: 8

SubType
find-input
Rule
×5
Input
8
Output
40
Difficulty
normal

? → [+10] → 13

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Answer: 3

SubType
find-input
Rule
+10
Input
3
Output
13
Difficulty
normal

? → [+5] → 13

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Answer: 8

SubType
find-input
Rule
+5
Input
8
Output
13
Difficulty
normal

Input: 10 → [?] → 20, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
10
Output
20
Difficulty
normal