medium Set 18 Form Exercise

Input: 4 → [?] → 1, what is the rule?

Show answer

Answer: -3

SubType
find-rule
Rule
-3
Input
4
Output
1
Difficulty
medium

Input: 10 → [?] → 23, what is the rule?

Show answer

Answer: ×2 + 3

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

Input: 5 → [×5] → ?

Show answer

Answer: 25

SubType
find-output
Rule
×5
Input
5
Output
25
Difficulty
medium

Input: 7 → [×3 - 2] → ?

Show answer

Answer: 19

SubType
find-output
Rule
×3 - 2
Input
7
Output
19
Difficulty
medium

? → [+5] → 15

Show answer

Answer: 10

SubType
find-input
Rule
+5
Input
10
Output
15
Difficulty
medium

? → [×5] → 20

Show answer

Answer: 4

SubType
find-input
Rule
×5
Input
4
Output
20
Difficulty
medium

Input: 6 → [?] → 11, what is the rule?

Show answer

Answer: +5

SubType
find-rule
Rule
+5
Input
6
Output
11
Difficulty
medium