hard Set 99 Form Exercise

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

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Answer: -1

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

Input: 6 → [-1] → ?

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Answer: 5

SubType
find-output
Rule
-1
Input
6
Output
5
Difficulty
hard

Input: 3 → [?] → 7, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
3
Output
7
Difficulty
hard

Input: 5 → [?] → 25, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
5
Output
25
Difficulty
hard

? → [+10] → 11

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Answer: 1

SubType
find-input
Rule
+10
Input
1
Output
11
Difficulty
hard

Input: 3 → [×2] → ?

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Answer: 6

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

Input: 3 → [?] → 14, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
3
Output
14
Difficulty
hard

Input: 3 → [×2 + 1] → ?

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Answer: 7

SubType
find-output
Rule
×2 + 1
Input
3
Output
7
Difficulty
hard