Observe the given pedigree chart depicting inheritance of haemophilia.
Blood tests of individuals P and R confirm that they are carriers of haemophilia. What will be the probability of first female child of P and Q to be haemophilic (X) and first male child of R and S to be haemophilic (Y)?
![1189025_e22e7b34b04f47bd99b3ae92568f2310.1189025-Q](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/1189025_e22e7b34b04f47bd99b3ae92568f2310.1189025-Q)