Admission test for the degree course in medicine and surgery academic year 2015/2016
Domanda 17 di 54
When I made a hotel reservation online yesterday I was given an 8digit booking reference which contained no zeros. It did, however, consist of three 2digit odd numbers followed by the sum of these three numbers, and all eight digits were different.
The first digit of the booking reference was 4. What was the last digit?