IQ Teaser #26

If 9 out of 10 doctors surveyed indicated that they believe 9 out of 10 doctors are competent, which of the following can we conclude? A. 9 out of 10 doctors believe they are competent B. At least 81% of the doctors surveyed believe they are competent C. 90% of the doctors surveyed believe 1 doctor in 10 is not competent A and B A and C B and C A, B and C None of the above view results