expert Set 33 Form Exercise

? → [-1] → 6

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Answer: 7

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

Input: 5 → [?] → 11, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
5
Output
11
Difficulty
expert

Input: 1 → [?] → 3, what is the rule?

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Answer: ×3

SubType
find-rule
Rule
×3
Input
1
Output
3
Difficulty
expert

? → [-1] → 9

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Answer: 10

SubType
find-input
Rule
-1
Input
10
Output
9
Difficulty
expert

Input: 4 → [?] → 16, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
4
Output
16
Difficulty
expert

? → [+5] → 14

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Answer: 9

SubType
find-input
Rule
+5
Input
9
Output
14
Difficulty
expert

? → [×2 + 1] → 5

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Answer: 2

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

Input: 8 → [+5] → ?

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Answer: 13

SubType
find-output
Rule
+5
Input
8
Output
13
Difficulty
expert