Sort:  

No one is lying. All 3 doctors are women. They are Robert's sisters.
This riddle takes advantage of some very common biases:
A: That in contradictory statements someone must be lying.
B: That doctors are men.
C: That the majority is right, so the minority must be lying.

Coin Marketplace

STEEM 0.20
TRX 0.25
JST 0.038
BTC 98087.08
ETH 3474.73
USDT 1.00
SBD 3.09