Question

x, y and z are real numbers. What is the value of x+ 2y + 3z ?
I. $x^2+y^2+Z^2=0$
II. $x=2y=3z$

• A. If the question can be answered by anyone of the statements alone, but cannot be answered by using the other statement alone.
• B. If the question can be answered by using either statement alone.
• C. If the question can be answered by using both the statements together, but cannot be answered by using either statement alone.
• D. If the question. cannot be answered even by using both the statements together.

Answer 1

The correct option is A If the question can be answered by anyone of the statements alone, but cannot be answered by using the other statement alone.

$x^2+y^2+z^2=0Thisispossibleonlywhenx=y=z=0.x+2y+3z=0$