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A chef is trying a recipe for a tasty ice cream using four ingredients. He can choose from three liquids for taste which are labeled A, B and C which are stable in nature and the choice for flavor can be from four liquids which are labeled W, X, Y and Z. For the new ice cream recipe to be tasty, there must be two liquids from the taste giving liquids. Also certain liquids cannot be mixed because of their reactions which makes it unhealthy for human consumption and the same is given below B cannot be mixed with W C cannot be mixed with Y Y cannot be mixed with Z
Which of the following combination of liquids is impossible ?
I. Using Y and W together
II. Using B and C together
III. Using W, X and Z together
Total four ingredients - 2 from A, B, C and 2 from W, X, Y, Z
Given, B - W, C - Y and Y - Z shouldn't be mixed.
There are three possible ways of selecting two from A, B and C
AB - XY, XZ
AC - WX, WZ, XZ
BC - XZ
(i) Using Y and W together is not possible.
(ii) Using B and C together is possible. (BC - XZ)
(iii) Using W, X, Z together is not possible because only two ingredients from W, X, Y, Z must be used.
The answer is option C.
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