hard Set 100 Form Exercise

? → [+4 ×2] → 28

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Answer: 10

SubType
find-input
Rule
+4 ×2
Input
10
Output
28
Difficulty
hard

? → [×2 + 1] → 13

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Answer: 6

SubType
find-input
Rule
×2 + 1
Input
6
Output
13
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

Input: 7 → [-1] → ?

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Answer: 6

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

Input: 10 → [+4 ×2] → ?

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Answer: 28

SubType
find-output
Rule
+4 ×2
Input
10
Output
28
Difficulty
hard

Input: 3 → [?] → 7, what is the rule?

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Answer: ×3 - 2

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

? → [+2] → 11

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Answer: 9

SubType
find-input
Rule
+2
Input
9
Output
11
Difficulty
hard

? → [+2] → 12

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Answer: 10

SubType
find-input
Rule
+2
Input
10
Output
12
Difficulty
hard