K-numbers are positive integers with only 2's as their digits. For example, 2, 22, and 222 are K-numbers. The K-weight of a number n is the minimum number of K-numbers that must be added together to equal n. For example, the K-weight of 50 is 5, because 50 = 22 + 22 + 2 + 2 + 2. What is the K-weight of 650?	Pick one
A) 10
B) 11
C) 12
D) 13
E) 14
650 = 2*222 + (22*9) + 4*2   K weight of 600 = 2 +9+2= 
<gadget id="calculator">2 +9+2</gadget>
<output>13</output>
13   Answer 13
<result>D</result>
K-numbers are positive integers with only 2's as their digits. For example, 2, 22, and 222 are K-numbers. The K-weight of a number n is the minimum number of K-numbers that must be added together to equal n. For example, the K-weight of 50 is 5, because 50 = 22 + 22 + 2 + 2 + 2. What is the K-weight of 650?