hard Set 90 Form Exercise

Input: 6 → [?] → 18, what is the rule?

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Answer: ×3

SubType
find-rule
Rule
×3
Input
6
Output
18
Difficulty
hard

Input: 5 → [?] → 13, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
5
Output
13
Difficulty
hard

Input: 8 → [+10] → ?

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Answer: 18

SubType
find-output
Rule
+10
Input
8
Output
18
Difficulty
hard

Input: 9 → [?] → 19, what is the rule?

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Answer: +10

SubType
find-rule
Rule
+10
Input
9
Output
19
Difficulty
hard

Input: 9 → [+5] → ?

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Answer: 14

SubType
find-output
Rule
+5
Input
9
Output
14
Difficulty
hard

Input: 4 → [-3] → ?

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Answer: 1

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

? → [×3] → 6

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Answer: 2

SubType
find-input
Rule
×3
Input
2
Output
6
Difficulty
hard