What are 3 different ways to make the number 15,638 with only hundreds, tens, ones

Different ways to make the number 15,638 with hundreds, tens and ones are: 
156 hundreds, 3 tens and 8 ones
150 hundreds, 63 tens and 8 ones
141 hundreds, 161 tens and 28 ones
we can write the numbers in thousands, hundreds, tens and ones by using the place values. We use these ten numbers 0,1,2,3,4,5,6,7,8,9 along with the concept of place value.

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints