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1. $\text{‘A } \$ \text{ B’}$means$\text{‘A}$is mother of$\text{B’;}$2.$\text{‘A } \# \text{ B’}$means$\text{‘A}$is father of$\text{B’;}$3.$\text{‘A } @ \text{ B’}$means$\text{‘A}$is husband of$\text{B’;}$4.$\text{‘A } \% \text{ B’}$means$\text{‘A}$is daughter of$\text{B’.}$Which of the following expressions indicates$\text{‘R’}$is the sister of$\text{‘H’}$? 1.$\text{H \$D @ F # R}$
2. $\text{R % D @ F \$ H}$3.$\text{R \$D @ F # H}$
4. None of these

Option (B) is correct.

• $R\%D:$ R is the daughter of D.
• [email protected]:$D is the husband of D, and R is the child of D, F. •$F\$H:$F is the mother of H.

D and F are couples here who have 2 children (R, H) since R is female and H's gender is not clear.so R is the sister of H.

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