easy Set 39 Form Exercise

? → [-1] → 2

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Answer: 3

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

Input: 3 → [?] → 5, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
3
Output
5
Difficulty
normal

Input: 9 → [+10] → ?

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Answer: 19

SubType
find-output
Rule
+10
Input
9
Output
19
Difficulty
normal

? → [-1] → 4

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Answer: 5

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

Input: 6 → [+5] → ?

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Answer: 11

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

Input: 3 → [?] → 2, what is the rule?

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Answer: -1

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

Input: 5 → [×2] → ?

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Answer: 10

SubType
find-output
Rule
×2
Input
5
Output
10
Difficulty
normal

Input: 2 → [?] → 4, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
2
Output
4
Difficulty
normal