1.) The mode is the number that's most frequent in a given list. In our list, we have 2, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 9, 10. Our most frequent number is 6; therefore, our mode is 6.
2.) The median is the number in the middle of a list organized from least to greatest. 2, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 9, 10; 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 9; 4, 5, 5, 5, 6, 6, 6, 6, 7; 5, 5, 5, 6, 6, 6, 6; 5, 5, 6, 6, 6; 5, 6, 6; 6. 6 is our median.
I hope this helps, despite your answer choices not providing the correct answer.
Monday he sends it to 3 friends. Those three friends send it each three times. Friend 1 =3 F2=3 F3=3. So, on Tuesday a total of 3 people received it. By Wednesday a total of 12 people received it. for the Thursday each of them had sent 3 more which totals out to 39 people that had received the email from him.