Question

which to digit number is equal to twice the sum of digits?
​

Answer 1

Answer:

• The sum of digits is 1+8 = 9. So the only positive TWO-DIGIT integer that is exactly twice the sum of its digits is 18.

Answer 2

Answer:

The sum of digits is 1+8 = 9. So the only positive TWO-DIGIT integer that is exactly twice the sum of its digits is