September 2018
Problem of the Month
Mr. P's Phone Number
Mr. P's phone number (Area code / Exchange / Number) consists of ten digits with no duplicates.
The three digits in the area code are in descending order,
and the the four digits in the number are in ascending order.
The sum of the three numbers in the exchange is 18.
The three digits of the exchange are not in ascending or descending order.
The third digit in the exchange is one less than the last digit in the number.
The telephone number is divisible by five.
What is Mr. P's phone number?
Disclaimer: Only the first five digits (area code plus the first two digits of the exchange) are really Mr. P's pnone number. The last five digits had
to be changed to make up this problem!