hard Set 90 Form Exercise

? → [+5] → 8

Show answer

Answer: 3

SubType
find-input
Rule
+5
Input
3
Output
8
Difficulty
hard

Input: 10 → [+10] → ?

Show answer

Answer: 20

SubType
find-output
Rule
+10
Input
10
Output
20
Difficulty
hard

Input: 2 → [×3] → ?

Show answer

Answer: 6

SubType
find-output
Rule
×3
Input
2
Output
6
Difficulty
hard

? → [×2 + 1] → 13

Show answer

Answer: 6

SubType
find-input
Rule
×2 + 1
Input
6
Output
13
Difficulty
hard

? → [+4 ×2] → 10

Show answer

Answer: 1

SubType
find-input
Rule
+4 ×2
Input
1
Output
10
Difficulty
hard

Input: 9 → [×2 + 3] → ?

Show answer

Answer: 21

SubType
find-output
Rule
×2 + 3
Input
9
Output
21
Difficulty
hard

? → [×3 - 2] → 13

Show answer

Answer: 5

SubType
find-input
Rule
×3 - 2
Input
5
Output
13
Difficulty
hard

Input: 4 → [-1] → ?

Show answer

Answer: 3

SubType
find-output
Rule
-1
Input
4
Output
3
Difficulty
hard