medium Set 77 Form Exercise

Input: 2 → [-1] → ?

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Answer: 1

SubType
find-output
Rule
-1
Input
2
Output
1
Difficulty
medium

Input: 9 → [?] → 45, what is the rule?

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Answer: ×5

SubType
find-rule
Rule
×5
Input
9
Output
45
Difficulty
medium

Input: 10 → [×2 + 3] → ?

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Answer: 23

SubType
find-output
Rule
×2 + 3
Input
10
Output
23
Difficulty
medium

Input: 9 → [?] → 26, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
9
Output
26
Difficulty
medium

? → [+10] → 17

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Answer: 7

SubType
find-input
Rule
+10
Input
7
Output
17
Difficulty
medium

? → [+5] → 6

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Answer: 1

SubType
find-input
Rule
+5
Input
1
Output
6
Difficulty
medium

? → [×2 + 3] → 19

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Answer: 8

SubType
find-input
Rule
×2 + 3
Input
8
Output
19
Difficulty
medium

Input: 2 → [×2 + 3] → ?

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Answer: 7

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