expert Set 21 Form Exercise

Input: 8 → [?] → 10, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
8
Output
10
Difficulty
expert

Input: 4 → [?] → 16, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
4
Output
16
Difficulty
expert

Input: 8 → [?] → 13, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
8
Output
13
Difficulty
expert

Input: 1 → [?] → 5, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
1
Output
5
Difficulty
expert

Input: 5 → [?] → 18, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
5
Output
18
Difficulty
expert

Input: 1 → [?] → 0, what is the rule?

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Answer: -1

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

Input: 6 → [×2 + 1] → ?

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Answer: 13

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

Input: 4 → [×3 - 2] → ?

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Answer: 10

SubType
find-output
Rule
×3 - 2
Input
4
Output
10
Difficulty
expert