Direction: A scientist is trying to find a cure for the common cold using four ingredients. He can choose from the stable chemicals A, B and C and the unstable chemicals W, X, Y and Z. In order for the formula not to explode, there must be two stable chemicals cannot be mixed because of their reaction together. Chemicals B cannot be mixed with chemicals W. Chemicals C cannot be mixed with chemicals Y. Chemicals Y cannot be mixed with chemicals Z.
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The scientist rejected chemical B because of its possible side effects but decided to use chemical Z. Which is a possible combination of the four ingredients in the formula?
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- A, W, Y and Z
- A, C, W and Z
- A, W, X and Z
- A, X, Y and Z
- A, W, Y and Z
Correct Option: B
Given in the question ,
If B rejected so W can be mixed and Z is present, Y can't mixed.
Again we 2 stable ingredients. So, A & C will be there.
