expert Set 71 Form Exercise

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

Input: 6 → [?] → 16, what is the rule?

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Answer: +10

SubType
find-rule
Rule
+10
Input
6
Output
16
Difficulty
expert

? → [+4 ×2] → 22

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Answer: 7

SubType
find-input
Rule
+4 ×2
Input
7
Output
22
Difficulty
expert

Input: 4 → [?] → 3, what is the rule?

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Answer: -1

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

Input: 9 → [×3 - 2] → ?

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Answer: 25

SubType
find-output
Rule
×3 - 2
Input
9
Output
25
Difficulty
expert

Input: 10 → [×3 - 2] → ?

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Answer: 28

SubType
find-output
Rule
×3 - 2
Input
10
Output
28
Difficulty
expert

? → [-3] → 2

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Answer: 5

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

? → [×2 + 1] → 13

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Answer: 6

SubType
find-input
Rule
×2 + 1
Input
6
Output
13
Difficulty
expert