Question

Directions for Question :-

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 in
it. Also certain chemicals cannot be mixed because
of their reaction together. Chemical B cannot be
mixed with chemical W. Chemical C cannot be mixed
with Chemical Y. Chemical Y cannot be mixed with
Chemical Z.

Q. Which of the following combinations of chemical is impossible?
a. Using chemical Y and W together.
b. Using chemical B and C together.
c. Using chemical W,X and Z together.

Options -
1. c only
2. a and c only
3. a only
4. b only​

Answer 1

Answer:

2. a and c only..

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Answer 2

Step-by-step explanation:

2 is the correct answer