"In the following problem, there is a question and two statements (I) and (II). What is the value of y?"
i. 2x + 3y + 4z = 25II. 4x + 7y + 8z = 62
1
"If the answer to the question can be given by using either statement (I) or (II) alone."
2
"If the answer to the question cannot be given even by using both statements together."
3
"If the answer to the question can be given by using both statements together, but not by either statement alone."
4
"If the answer to the question can be given by using one statement alone, but the answer cannot be given by using the other statement alone."