If '?' represents division, '?' represents multiplication, '?' represents subtraction, and '?' represents addition, what is the value of 10 ? 2 ? 3 ? 4 ? 1?
If '?' represents subtraction, '?' represents addition, '?' represents multiplication, and '?' represents division, what is the result of 15 ? 5 ? 3 ? 2 ? 4?
If '>' means 'less than', '<' means 'greater than', '=' means 'not equal to', and '?' means 'equal to', which of the following statements is true? 7 > 10 ? 7 < 5?
If '?' represents multiplication, '?' represents addition, '?' represents subtraction, and '?' represents division, what is the value of 6 ? 2 ? 3 ? 1 ? 2?