Question: Choose 1 ; if the question can be answered by using one of the statements alone, but cannot be answered using the other statement alone.Choose 2 ; if the question can be answered by using either statement alone.Choose 3 ; if the question can be answered by using both statements together, but cannot be answered using either statement alone.Choose 4 ; if the question cannot be answered even by using both statements together.
For any two real numbers
a ⊕ b = 1 if both a and b are positive or both a and b are negative.
What is (2 ⊕ 0) ⊕ (–5 ⊕ –6)?
a ⊕ b is zero if a is zero.
a ⊕ b = b ⊕ a
∴ Statement A alone is not sufficient to answer the question.
∴ Statement B alone is not sufficient to answer the question.
∴ Both the statements are required to answer the question.
Hence, option (c).