easy Set 18 Form Exercise

? → [×3] → 9

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Answer: 3

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

? → [-1] → 5

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Answer: 6

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

Input: 5 → [?] → 4, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
5
Output
4
Difficulty
normal

Input: 10 → [×2] → ?

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Answer: 20

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

Input: 1 → [+10] → ?

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Answer: 11

SubType
find-output
Rule
+10
Input
1
Output
11
Difficulty
normal

Input: 4 → [?] → 1, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
4
Output
1
Difficulty
normal

? → [-1] → 2

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Answer: 3

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