medium Set 84 Form Exercise

Input: 3 → [?] → 8, what is the rule?

Show answer

Answer: +5

SubType
find-rule
Rule
+5
Input
3
Output
8
Difficulty
medium

Input: 3 → [-3] → ?

SubType
find-output
Rule
-3
Input
3
Output
0
Difficulty
medium

? → [×3] → 18

Show answer

Answer: 6

SubType
find-input
Rule
×3
Input
6
Output
18
Difficulty
medium

? → [×2] → 10

Show answer

Answer: 5

SubType
find-input
Rule
×2
Input
5
Output
10
Difficulty
medium

Input: 5 → [+10] → ?

Show answer

Answer: 15

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

Input: 9 → [?] → 21, what is the rule?

Show answer

Answer: ×2 + 3

SubType
find-rule
Rule
×2 + 3
Input
9
Output
21
Difficulty
medium

Input: 8 → [×2 + 3] → ?

Show answer

Answer: 19

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

? → [×2] → 8

Show answer

Answer: 4

SubType
find-input
Rule
×2
Input
4
Output
8
Difficulty
medium