hard Set 33 Form Exercise

? → [+2] → 10

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Answer: 8

SubType
find-input
Rule
+2
Input
8
Output
10
Difficulty
hard

Input: 3 → [?] → 2, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
3
Output
2
Difficulty
hard

? → [×2 + 1] → 5

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Answer: 2

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

Input: 4 → [×2] → ?

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Answer: 8

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

Input: 6 → [×3] → ?

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Answer: 18

SubType
find-output
Rule
×3
Input
6
Output
18
Difficulty
hard

Input: 8 → [×3 - 2] → ?

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Answer: 22

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

? → [×3] → 9

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Answer: 3

SubType
find-input
Rule
×3
Input
3
Output
9
Difficulty
hard

? → [×3] → 18

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Answer: 6

SubType
find-input
Rule
×3
Input
6
Output
18
Difficulty
hard