A phone number on the business card is hidden below the pen. The number contains all ten digits shown in the lower left corner.
Main rule: no two adjacent digits in the phone number are the neighboring numbers in the from the corner. For example, 3 isn’t next to either 4 or 2. Please, note that 0 cannot be next to 9, though it can be next to 1.
Can you reveal the phone number and discover what digit is second from right in it?
The phone is revealed: the 2nd digit from right is 6.