https://www.gregmat.com/quizzes/quiz/im-overwhelmed-arithmetic-progress-quiz-2 (Question 13)
This question is number supposed to be divisible by 5 however it is marked as such. Is this a typo or am I missing something?
The number is not divisible by 5, but the question asks whether we can determine if it is or not. So the question is not asking if the number is divisible by 5, but rather if we can make a conclusion about whether its divisible or not. Here, we can tell that it’s NOT divisible by 5, meaning that we CAN “determine whether this number is divisible by 5.”
Hopefully that answered your question