If ‘U × V’ means ‘U is the daughter of V’, ‘U + V’ means ‘U is the husband of V’, and ‘U – V’ means ‘U is the sister of V’, then what does ‘W + X – Y × Z’ mean?
- AW is the uncle of Z
- BW is the brother-in-law of Z
- CZ is the mother-in-law of W
- DW is the son-in-law of Z
Solution & Step-by-step Explanation
Let's decode the expression ‘W + X – Y × Z’ step by step from left to right:
W + X: W is the husband of X. (W is male, X is female)
X - Y: X is the sister of Y. (Since X and Y are siblings, W is the brother-in-law of Y)
Y × Z: Y is the daughter of Z.
From (2) and (3), since X is the sister of Y, and Y is the daughter of Z, X must also be the daughter of Z.
Since W is the husband of X, and X is Z's daughter, W is the son-in-law of Z.
W + X: W is the husband of X. (W is male, X is female)
X - Y: X is the sister of Y. (Since X and Y are siblings, W is the brother-in-law of Y)
Y × Z: Y is the daughter of Z.
From (2) and (3), since X is the sister of Y, and Y is the daughter of Z, X must also be the daughter of Z.
Since W is the husband of X, and X is Z's daughter, W is the son-in-law of Z.