hard Set 26 Form Exercise

? → [+10] → 18

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Answer: 8

SubType
find-input
Rule
+10
Input
8
Output
18
Difficulty
hard

Input: 9 → [?] → 27, what is the rule?

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Answer: ×3

SubType
find-rule
Rule
×3
Input
9
Output
27
Difficulty
hard

Input: 4 → [?] → 3, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
4
Output
3
Difficulty
hard

Input: 4 → [+10] → ?

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Answer: 14

SubType
find-output
Rule
+10
Input
4
Output
14
Difficulty
hard

? → [×2 + 1] → 21

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Answer: 10

SubType
find-input
Rule
×2 + 1
Input
10
Output
21
Difficulty
hard

Input: 8 → [?] → 13, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
8
Output
13
Difficulty
hard

Input: 7 → [?] → 15, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
7
Output
15
Difficulty
hard

? → [×2 + 1] → 11

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Answer: 5

SubType
find-input
Rule
×2 + 1
Input
5
Output
11
Difficulty
hard