Question

Several students in Ashton's class were randomly selected and asked how many text messages they sent yesterday. Their answers were 1,0,10,7,13,2,9,15,0,3.

How many student were Asked? How do you know?

Answer 1

well just count the answers that was sent and that should be your answer I believe

Answer 2

Well, you wrote a list of 10 numbers, and
you called the list "Their answers".

If their answers are written as a list of 10 numbers,
and if there's no hanky panky going on that you're
not telling us, then the 10 answers came from
asking 10 students.