hard Set 37 Form Exercise

? → [+2] → 12

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Answer: 10

SubType
find-input
Rule
+2
Input
10
Output
12
Difficulty
hard

Input: 8 → [?] → 40, what is the rule?

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Answer: ×5

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

Input: 5 → [+5] → ?

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Answer: 10

SubType
find-output
Rule
+5
Input
5
Output
10
Difficulty
hard

Input: 5 → [?] → 4, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
5
Output
4
Difficulty
hard

? → [+5] → 10

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Answer: 5

SubType
find-input
Rule
+5
Input
5
Output
10
Difficulty
hard

? → [×3] → 3

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Answer: 1

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

? → [×3] → 9

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Answer: 3

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

Input: 10 → [?] → 23, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
10
Output
23
Difficulty
hard