Question

Each student in a class of 25 students wrote down a random digit. What is the predicted number of students who wrote a digit that is greater than 7?

The answer is 5... How did they get 5? THANK YOU!!

Answer 1

digits are 0,1,2,3,4,5,6,7,8,9. there aer 10 digits
the digits that are greater than 7 are 8 and 9, 2 digits

2/10 are predicted greater than 7
1/5 are predicted greater than 7

1/5 of 25=25/5=5
5 pick is predicted