expert Set 40 Form Exercise

Input: 10 → [×2] → ?

Show answer

Answer: 20

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

Input: 6 → [-1] → ?

Show answer

Answer: 5

SubType
find-output
Rule
-1
Input
6
Output
5
Difficulty
expert

Input: 5 → [?] → 13, what is the rule?

Show answer

Answer: ×3 - 2

SubType
find-rule
Rule
×3 - 2
Input
5
Output
13
Difficulty
expert

? → [+2] → 6

Show answer

Answer: 4

SubType
find-input
Rule
+2
Input
4
Output
6
Difficulty
expert

? → [×3] → 24

Show answer

Answer: 8

SubType
find-input
Rule
×3
Input
8
Output
24
Difficulty
expert

Input: 7 → [+10] → ?

Show answer

Answer: 17

SubType
find-output
Rule
+10
Input
7
Output
17
Difficulty
expert

? → [×5] → 45

Show answer

Answer: 9

SubType
find-input
Rule
×5
Input
9
Output
45
Difficulty
expert

Input: 8 → [-3] → ?

Show answer

Answer: 5

SubType
find-output
Rule
-3
Input
8
Output
5
Difficulty
expert