expert Set 53 Form Exercise

Input: 7 → [?] → 35, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
7
Output
35
Difficulty
expert

? → [+2] → 11

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Answer: 9

SubType
find-input
Rule
+2
Input
9
Output
11
Difficulty
expert

? → [×3] → 9

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Answer: 3

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

Input: 7 → [?] → 4, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
7
Output
4
Difficulty
expert

Input: 9 → [×2 + 1] → ?

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Answer: 19

SubType
find-output
Rule
×2 + 1
Input
9
Output
19
Difficulty
expert

Input: 5 → [?] → 4, what is the rule?

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Answer: -1

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

? → [+5] → 12

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Answer: 7

SubType
find-input
Rule
+5
Input
7
Output
12
Difficulty
expert

Input: 4 → [?] → 1, what is the rule?

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Answer: -3

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