RRB NTPC CBT 2 Level 4 Exam 10 May 2022 Shift 1

Question : 117 of 120

Marks: +1, -0

If 'P&Q' indicates that 'P is the son of Q', and 'P$Q' indicates that 'P is the sister of Q', then which of the following expressions would indicate that 'Y is the mother of Z'?