medium Set 71 Form Exercise

? → [×5] → 50

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Answer: 10

SubType
find-input
Rule
×5
Input
10
Output
50
Difficulty
medium

? → [+5] → 13

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Answer: 8

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

Input: 1 → [?] → 10, what is the rule?

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Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
1
Output
10
Difficulty
medium

Input: 4 → [?] → 10, what is the rule?

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Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
4
Output
10
Difficulty
medium

? → [×3 - 2] → 16

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Answer: 6

SubType
find-input
Rule
×3 - 2
Input
6
Output
16
Difficulty
medium

Input: 10 → [×2] → ?

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Answer: 20

SubType
find-output
Rule
×2
Input
10
Output
20
Difficulty
medium

? → [×2 + 1] → 19

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Answer: 9

SubType
find-input
Rule
×2 + 1
Input
9
Output
19
Difficulty
medium

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
medium