expert Set 94 Form Exercise

Input: 5 → [?] → 2, what is the rule?

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Answer: -3

SubType
find-rule
Rule
-3
Input
5
Output
2
Difficulty
expert

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
expert

? → [×2 + 3] → 19

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Answer: 8

SubType
find-input
Rule
×2 + 3
Input
8
Output
19
Difficulty
expert

Input: 8 → [×5] → ?

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Answer: 40

SubType
find-output
Rule
×5
Input
8
Output
40
Difficulty
expert

Input: 6 → [?] → 12, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
6
Output
12
Difficulty
expert

? → [×2 + 1] → 3

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Answer: 1

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

? → [-1] → 0

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Answer: 1

SubType
find-input
Rule
-1
Input
1
Output
0
Difficulty
expert

Input: 6 → [?] → 15, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
6
Output
15
Difficulty
expert