hard Set 87 Form Exercise

Input: 1 → [?] → 6, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
1
Output
6
Difficulty
hard

Input: 2 → [?] → 4, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
2
Output
4
Difficulty
hard

Input: 2 → [?] → 1, what is the rule?

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Answer: -1

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

? → [×2 + 1] → 3

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Answer: 1

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

? → [×3 - 2] → 28

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Answer: 10

SubType
find-input
Rule
×3 - 2
Input
10
Output
28
Difficulty
hard

Input: 3 → [×2 + 3] → ?

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Answer: 9

SubType
find-output
Rule
×2 + 3
Input
3
Output
9
Difficulty
hard

Input: 9 → [?] → 25, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
9
Output
25
Difficulty
hard

Input: 4 → [×2] → ?

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Answer: 8

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