easy Set 30 Form Exercise

Input: 4 → [?] → 8, what is the rule?

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Answer: ×2

SubType
find-rule
Rule
×2
Input
4
Output
8
Difficulty
easy

Input: 7 → [?] → 21, what is the rule?

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Answer: ×3

SubType
find-rule
Rule
×3
Input
7
Output
21
Difficulty
easy

Input: 2 → [?] → 7, what is the rule?

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Answer: +5

SubType
find-rule
Rule
+5
Input
2
Output
7
Difficulty
easy

? → [-1] → 9

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Answer: 10

SubType
find-input
Rule
-1
Input
10
Output
9
Difficulty
easy

Input: 7 → [+2] → ?

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Answer: 9

SubType
find-output
Rule
+2
Input
7
Output
9
Difficulty
easy

Input: 4 → [×5] → ?

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Answer: 20

SubType
find-output
Rule
×5
Input
4
Output
20
Difficulty
easy

Input: 3 → [-1] → ?

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Answer: 2

SubType
find-output
Rule
-1
Input
3
Output
2
Difficulty
easy

Input: 10 → [?] → 30, what is the rule?

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Answer: ×3

SubType
find-rule
Rule
×3
Input
10
Output
30
Difficulty
easy