hard Set 69 Form Exercise

? → [+10] → 13

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Answer: 3

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

Input: 1 → [×2 + 1] → ?

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Answer: 3

SubType
find-output
Rule
×2 + 1
Input
1
Output
3
Difficulty
hard

Input: 6 → [?] → 20, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
6
Output
20
Difficulty
hard

? → [×2] → 18

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Answer: 9

SubType
find-input
Rule
×2
Input
9
Output
18
Difficulty
hard

? → [×2 + 1] → 5

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Answer: 2

SubType
find-input
Rule
×2 + 1
Input
2
Output
5
Difficulty
hard

Input: 1 → [?] → 5, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
1
Output
5
Difficulty
hard

? → [+5] → 9

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Answer: 4

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

Input: 1 → [?] → 2, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
1
Output
2
Difficulty
hard