medium Set 38 Form Exercise

Input: 5 → [×3] → ?

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Answer: 15

SubType
find-output
Rule
×3
Input
5
Output
15
Difficulty
medium

? → [+4 ×2] → 12

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Answer: 2

SubType
find-input
Rule
+4 ×2
Input
2
Output
12
Difficulty
medium

Input: 10 → [?] → 20, what is the rule?

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Answer: +10

SubType
find-rule
Rule
+10
Input
10
Output
20
Difficulty
medium

Input: 4 → [-1] → ?

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Answer: 3

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

Input: 2 → [+2] → ?

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Answer: 4

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

Input: 4 → [?] → 20, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
4
Output
20
Difficulty
medium

? → [×3 - 2] → 10

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Answer: 4

SubType
find-input
Rule
×3 - 2
Input
4
Output
10
Difficulty
medium

Input: 4 → [?] → 11, what is the rule?

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Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
4
Output
11
Difficulty
medium