MBA Exam

f(x,y)=2(x^2 + y^2) - 6x -10y + 21 attains its minimum value at (x,y) = (a,b)find the value of 3a+5b ?

1) 0
2) 8
3) 4
4) 17
5) none of these

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MBA Other Question

P(X wins the game against Y) = 0.6.P(X ties against Y) = 0.2. P(X wins the series of 3 games) ?

1) 0.72
2) 0.216
3) 0.648
4) 0.384
x+y+z = 72, Find no of (x,y,z) Condition x > y > z . x,y,z are whole nos.Plz explain the soln..... Dont have the ans!!