medium Set 78 Form Exercise

Input: 5 → [×2 + 3] → ?

Show answer

Answer: 13

SubType
find-output
Rule
×2 + 3
Input
5
Output
13
Difficulty
medium

Input: 7 → [?] → 15, what is the rule?

Show answer

Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
7
Output
15
Difficulty
medium

? → [×2 + 3] → 17

Show answer

Answer: 7

SubType
find-input
Rule
×2 + 3
Input
7
Output
17
Difficulty
medium

Input: 2 → [+10] → ?

Show answer

Answer: 12

SubType
find-output
Rule
+10
Input
2
Output
12
Difficulty
medium

? → [+5] → 6

Show answer

Answer: 1

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

Input: 1 → [?] → 3, what is the rule?

Show answer

Answer: ×2 + 1

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

? → [-1] → 4

Show answer

Answer: 5

SubType
find-input
Rule
-1
Input
5
Output
4
Difficulty
medium

Input: 9 → [?] → 8, what is the rule?

Show answer

Answer: -1

SubType
find-rule
Rule
-1
Input
9
Output
8
Difficulty
medium