5

Can you find the missing number? This number has a single digit.

8 → 7

7 → 3

3 → 5

5 → ?

Good luck!

Glorfindel
  • 28,033
  • 9
  • 96
  • 142
Dmitry Kamenetsky
  • 35,897
  • 5
  • 66
  • 276
  • 6
    I think that you should familiarise yourself with this: https://puzzling.meta.stackexchange.com/questions/5712/number-sequence-puzzles-what-not-to-do – user3644640 Sep 19 '19 at 10:55

2 Answers2

9

I think that 5 maps to

5

because it takes

5 segments to display the number 5 in a seven segment display.

This fits the pattern for the other numbers:
- 8 takes 7 segments
- 7 takes 3 segments
- 3 takes 5 segments

Glorfindel
  • 28,033
  • 9
  • 96
  • 142
8

I think the answer is

5 $\rightarrow$ 5

Reasoning

For each digit count the number of lit segments in a seven-segment display of the number.
8 has 7 lit segments, 7 has 3, 3 has 5 and 5 has 5.

hexomino
  • 135,910
  • 10
  • 384
  • 563