hard Set 99 Form Exercise

? → [×2 + 1] → 13

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Answer: 6

SubType
find-input
Rule
×2 + 1
Input
6
Output
13
Difficulty
hard

Input: 3 → [+5] → ?

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Answer: 8

SubType
find-output
Rule
+5
Input
3
Output
8
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: 2 → [?] → 5, what is the rule?

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Answer: ×2 + 1

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

Input: 8 → [×5] → ?

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Answer: 40

SubType
find-output
Rule
×5
Input
8
Output
40
Difficulty
hard

Input: 7 → [×5] → ?

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Answer: 35

SubType
find-output
Rule
×5
Input
7
Output
35
Difficulty
hard

Input: 8 → [+4 ×2] → ?

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Answer: 24

SubType
find-output
Rule
+4 ×2
Input
8
Output
24
Difficulty
hard

? → [+4 ×2] → 24

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Answer: 8

SubType
find-input
Rule
+4 ×2
Input
8
Output
24
Difficulty
hard