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1. If x+y = z and x = y, then all of the following are true EXCEPT -
- A. 2x+2y =2z
- B. 2x+2y =2z
- C. 2x+2y =2z
- D. 2x+2y =2z
Answer: Option D
Explanation:
If x=y then y+y=z
So, 2y=z
But in option D, x-y=2z
So, y-y = 2z or, z =0 which is not possible so option D is not true
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