If a dragonfly lives for 10 days, how many dragonfly die on average per day per dragonfly?

Answer: 0.000274 dragon fly per day.

Step-by-step explanation:

First convert the 10 years into days:

10 * 365 = 3650 days.

This means that one dragon fly dies every 3650 days.

Now, to find how many that dies in a day:

1 : 3650 = 0.000274, corrected to three significant figure.

Looks more like a probability question.