hard Set 31 Form Exercise

Input: 5 → [?] → 7, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
5
Output
7
Difficulty
hard

? → [-1] → 6

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Answer: 7

SubType
find-input
Rule
-1
Input
7
Output
6
Difficulty
hard

? → [+5] → 9

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Answer: 4

SubType
find-input
Rule
+5
Input
4
Output
9
Difficulty
hard

? → [×2] → 16

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Answer: 8

SubType
find-input
Rule
×2
Input
8
Output
16
Difficulty
hard

Input: 1 → [+5] → ?

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Answer: 6

SubType
find-output
Rule
+5
Input
1
Output
6
Difficulty
hard

Input: 10 → [+4 ×2] → ?

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Answer: 28

SubType
find-output
Rule
+4 ×2
Input
10
Output
28
Difficulty
hard

Input: 6 → [?] → 15, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
6
Output
15
Difficulty
hard

? → [×3 - 2] → 22

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Answer: 8

SubType
find-input
Rule
×3 - 2
Input
8
Output
22
Difficulty
hard