To represent 600 as the sum of K-numbers, we need to find the minimum number of K-numbers that must be added together to equal 600.

The largest K-number less than or equal to 600 is 222. Therefore, we start by dividing 600 by 222:

600÷222=2 remainder 156

This tells us that we can represent 600 as 2 times 222 plus a remainder of 156.

Next, we check how many times we can represent the remainder of 156 using the next largest K-number, which is 22:

156÷22=7 remainder 2

This tells us that we can represent 156 as 7 times 22 plus a remainder of 2.

Finally, the remainder of 2 can be represented using the smallest K-number, which is 2 itself.

So, to represent 600 as the sum of K-numbers, we need:

2 times 222
7 times 22
1 time 2
Therefore, the K-weight of 600 is

2+7+1=10.

The correct answer is A

Bernard Baah
MS '05, Stanford
GMAT and GRE Instructor
MapAdvantage Prep