Frequent Questions about our Solver

The problem

Click to see the original problem

can you explain how the 247 came about

Answer provided by our tutors

It is a numeric expression, '9' is subtracted from 16^2 which is the equivalent to 2^8 and equal to 256... hence, 247+9=256 and 256-9=247. 

Perhaps we are missing something about the observation... our solver will default to prime numbers, hence 16^2 was expressed as 2^8. 

← Previous Problem Next Problem →