starter Set 51 Form Exercise

Input: 9 → [×2] → ?

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Answer: 18

SubType
find-output
Rule
×2
Input
9
Output
18
Difficulty
starter

? → [+2] → 5

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Answer: 3

SubType
find-input
Rule
+2
Input
3
Output
5
Difficulty
starter

Input: 2 → [+2] → ?

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Answer: 4

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

? → [-3] → 3

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Answer: 6

SubType
find-input
Rule
-3
Input
6
Output
3
Difficulty
starter

? → [-3] → 2

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Answer: 5

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

Input: 10 → [?] → 9, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
10
Output
9
Difficulty
starter

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

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Answer: +2

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

Input: 9 → [×3] → ?

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Answer: 27

SubType
find-output
Rule
×3
Input
9
Output
27
Difficulty
starter