A 2-digit number is such that the product of the digits plus the sum of the digits
is equal to the number. What is the units digit of the number?  Pick:	A) 1	B) 3	C) 5	D) 7	E) 9
Assume the 2 digit number is of the form xy, with x 6= 0. The statement indicates   that these two digits satisfy the equation xy + x + y = 10x + y. A quick simplication gives   y = 9.   correct answer 9
<result>E</result>
A 2-digit number is such that the product of the digits plus the sum of the digits
is equal to the number. What is the units digit of the number?