Which of the following means Y is mother of X and Z?

X + Y - Z

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Y - X \div Z

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Y - X + Z

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Y \div X \times Z

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Z = X \div Y

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Solution

The correct option is C $Y - X + Z$
Here, the expression Y X + Z represents that Y is mother of X and Z as:
X + Z means X is the brother of Z and
Y - X means Y is the mother of X.
Clearly, Y is the mother of X and Z from the above two statements.
Hence, option (C) is the correct answer.

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