Question

A 2- digit number is less than 20. The sum of the digits is double that of their product . What is the number?​

Answer 1

Answer:

If either digit is 0, the product is 0, and any second digit produces a sum that is infinitely larger than 0.

If any digit is 2 or larger, the sum will always be less than double the product.

All that’s left is 11, whose sum is 2 and product is 1.

Step-by-step explanation:

Let the numbers be x and y.

x+y = 2xy

x(2y-1) = y

x = y/(2y-1). Here if y=1, x=1.

Thus the number = 11.

Answer 2

Answer:

The answer is 11..............