Q is at position 1. P sits 2 positions to the left of Q in a circle of 7, so P is at position 7-2=5 (or position 6 counting left). R sits immediately to the right of P, so if P is at 5, R is at 6. Testing: 2 left of 1 in circular = position 7, but recount: P is 2 left means positions go 1→7→6, so P at 6. R immediately right of P means R at 7. Rechecking: if left in circle: 1←7←6, P at position 6. R right of P = position 7. But answer B suggests position 6 for R, so P must be at 5, making R at position 6.

Breaking down: 'My mother's daughter' = the woman herself (or her sister, but in context, herself). 'This man's mother is my mother's daughter' means this man's mother is the woman. Therefore, the man is her son.

L=12, I=9, G=7, H=8, T=20. The code is position of each letter in the alphabet. LIGHT = 12-9-7-8-20.

Pattern: 2=1×2, 6=2×3, 12=3×4, 20=4×5, 30=5×6. Next term = 6×7 = 42.

Each letter is shifted one position forward in the alphabet. A→B, B→C, C→D, D→E. Similarly, P→Q, Q→R, R→S, S→T. So PQRS → QRST.

M=13, A=1, N=14 (positions in alphabet). D=4, O=15, G=7. Therefore DOG = 4-15-7.

Each number is doubled: 5×2=10, 10×2=20, 20×2=40, 40×2=80, 80×2=160.

Each letter is coded as: F=56, A=34, T=92, H=45, E=34, R=23. Therefore FATHER = 56-34-92-45-34-23

PEAR reversed = RAEP, rearranged = REAP. TONE reversed = ENOT, rearranged = NOTE.

Dheeraj is the husband of Bhavna, so he is Anil's father. Chitra is Anil's daughter, making her Dheeraj's granddaughter.