The concept of the question above is Permutation where in we are to arrange to arrange the 6 students from which there are 20 students. This is the "permutation of 20 taken 6" or 20P6. The numerical value of the permutation is equal to 27907200.
3.2-3x+7
6-3x+7
-7 -7
-1= -3x divide both sides by -3
x=0.3
K+ 3k = 940
4k= 940
K= 940/4
K= 235
H= 3k
H= 3×>235 = 705
K= 235
H= 705
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10/1 as a mixed number is just 10
