medium Set 77 Form Exercise

Input: 7 → [×3] → ?

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Answer: 21

SubType
find-output
Rule
×3
Input
7
Output
21
Difficulty
medium

Input: 9 → [?] → 11, what is the rule?

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Answer: +2

SubType
find-rule
Rule
+2
Input
9
Output
11
Difficulty
medium

? → [+2] → 4

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Answer: 2

SubType
find-input
Rule
+2
Input
2
Output
4
Difficulty
medium

? → [+10] → 13

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Answer: 3

SubType
find-input
Rule
+10
Input
3
Output
13
Difficulty
medium

Input: 1 → [-1] → ?

SubType
find-output
Rule
-1
Input
1
Output
0
Difficulty
medium

? → [-3] → 5

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Answer: 8

SubType
find-input
Rule
-3
Input
8
Output
5
Difficulty
medium

Input: 4 → [?] → 1, what is the rule?

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Answer: -3

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

? → [+4 ×2] → 24

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Answer: 8

SubType
find-input
Rule
+4 ×2
Input
8
Output
24
Difficulty
medium