hard Set 86 Form Exercise

Input: 3 → [-1] → ?

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Answer: 2

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

Input: 10 → [-1] → ?

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Answer: 9

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

Input: 5 → [?] → 11, what is the rule?

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Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
5
Output
11
Difficulty
hard

Input: 10 → [×2 + 1] → ?

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Answer: 21

SubType
find-output
Rule
×2 + 1
Input
10
Output
21
Difficulty
hard

? → [×5] → 45

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Answer: 9

SubType
find-input
Rule
×5
Input
9
Output
45
Difficulty
hard

Input: 9 → [?] → 25, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
9
Output
25
Difficulty
hard

Input: 7 → [?] → 6, what is the rule?

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Answer: -1

SubType
find-rule
Rule
-1
Input
7
Output
6
Difficulty
hard

? → [+5] → 13

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Answer: 8

SubType
find-input
Rule
+5
Input
8
Output
13
Difficulty
hard