Hexadecimal Clock (Problem $9$ )

Computer Science Level 2

What's the time $21: 32$ in hexadecimal time?

Note: use a traditional clock but replace $10, 11, 12$ with $A, B, C$ respectively.

16:23

15:22

15:21

15:20

1 solution

Yajat Shamji
Jun 28, 2020

$21 \div 16 = 1$

$21 (\text{mod}(16)) = 5$

$32 \div 16 = 2$

$32 (\text{mod}(16)) = 0$

Answer $\rightarrow 15:20$