medium Set 90 Form Exercise

? → [+10] → 20

Show answer

Answer: 10

SubType
find-input
Rule
+10
Input
10
Output
20
Difficulty
medium

? → [+10] → 19

Show answer

Answer: 9

SubType
find-input
Rule
+10
Input
9
Output
19
Difficulty
medium

Input: 1 → [?] → 5, what is the rule?

Show answer

Answer: ×5

SubType
find-rule
Rule
×5
Input
1
Output
5
Difficulty
medium

Input: 2 → [?] → 10, what is the rule?

Show answer

Answer: ×5

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

Input: 8 → [?] → 24, what is the rule?

Show answer

Answer: +4 ×2

SubType
find-rule
Rule
+4 ×2
Input
8
Output
24
Difficulty
medium

? → [×2] → 18

Show answer

Answer: 9

SubType
find-input
Rule
×2
Input
9
Output
18
Difficulty
medium

Input: 6 → [+5] → ?

Show answer

Answer: 11

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

Input: 6 → [-3] → ?

Show answer

Answer: 3

SubType
find-output
Rule
-3
Input
6
Output
3
Difficulty
medium