1,2,3,4
addends
4
24 ways
1124 1224 1244
24
Venn diagrams helps us arrange numbers in odrder
the plugs are numbered from in accending order from passenger side, rear of engine, 1, 2, 3, and then in the front from passenger side 4, 5, 6
The median is the number inthe middle of the range where there are as many other numbers smaller asare larger. arrange in order and find middle: 4 5 6 8 12 answer = 6 ,
If the order of the 4 numbers matters, then there are (6 x 5 x 4 x 3) = 360 .If the order of the 4 numbers doesn't matter, then there are 15 different groups of 4.
There are 4 numbers to choose from for the first space, 3 for the next space, and so on. Therefore the answer is 4! or 24.
Only One
1+2+3+4+5+6+7+(8x9)=100