Problema Solution
Three lockers are numbered consecutively is such a way that the sum of the first and last lockers is the same as twice the middle locker number. What are the locker numbers?
Answer provided by our tutors
if the middle number is noted as N, then
other two be N-1 and N+1.
it's given that N-1+N+1 = 2N, that is
N = N
Whatever is the middle locker - the condition is satisfied.
Providing we deal with positive numbers - middle number can't be less tahn 2.
:) funny