Question

There are ___ seconds in a day.

• A. $36000s$
• B. $86000s$
• C. $86400s$
• D. $24000s$

Answer 1

The correct option is C

$86400s$

$\text{1 day = 24 hours}$
$\text{1 hour = 60 minutes}$
$\text{1 minute= 60 seconds}$

$\text{1 hour = 60}\times \text{60 = 3600 seconds}$

$\text{1 day = 24}\times \text{3600 = 86400 seconds}$

Therefore, there are 86400 seconds in a day.