exam
Maths Puzzle
Numerical Ability
2x2y2z3-3.1y2+5yz-z
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exam Other Question
Use the Gauss-Jordon method
4x-3y+z-w=21
-2x-y+2z+7w=2
10x-5z-20w=15
what is the standard error of the mean
10,8,4,4,6,2,3,2,2,5,3,8,5,7,9,9,6,9,5,4,1,5,4,2,8