hard Set 69 Form Exercise

? → [-3] → 3

Show answer

Answer: 6

SubType
find-input
Rule
-3
Input
6
Output
3
Difficulty
hard

? → [×5] → 5

Show answer

Answer: 1

SubType
find-input
Rule
×5
Input
1
Output
5
Difficulty
hard

? → [×2 + 3] → 13

Show answer

Answer: 5

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

Input: 5 → [-1] → ?

Show answer

Answer: 4

SubType
find-output
Rule
-1
Input
5
Output
4
Difficulty
hard

? → [×3 - 2] → 25

Show answer

Answer: 9

SubType
find-input
Rule
×3 - 2
Input
9
Output
25
Difficulty
hard

Input: 10 → [?] → 21, what is the rule?

Show answer

Answer: ×2 + 1

SubType
find-rule
Rule
×2 + 1
Input
10
Output
21
Difficulty
hard

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

Show answer

Answer: ×2 + 3

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