easy Set 51 Form Exercise

? → [-1] → 8

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Answer: 9

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

Input: 7 → [?] → 4, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
7
Output
4
Difficulty
normal

Input: 6 → [?] → 11, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
6
Output
11
Difficulty
normal

Input: 8 → [×2] → ?

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Answer: 16

SubType
find-output
Rule
×2
Input
8
Output
16
Difficulty
normal

Input: 10 → [+5] → ?

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Answer: 15

SubType
find-output
Rule
+5
Input
10
Output
15
Difficulty
normal

? → [×5] → 30

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Answer: 6

SubType
find-input
Rule
×5
Input
6
Output
30
Difficulty
normal

? → [-1] → 5

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Answer: 6

SubType
find-input
Rule
-1
Input
6
Output
5
Difficulty
normal