MBA Exam

The sides of triangle ABC are a,b,c and DEF are d,e,f. a(a+b+c)=d^2, b(a+b+c)=e^2, c(a+b+c)=f^2. Greatest angle of DEF is x. Which is true ?Provide solution ....

1) 60<x<90
2) x=90
3) 90<x<105
4) 105<x<120

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MBA Other Question
If f(x, y) = 1 + 2 + 3 + …. + x if x > y and f(x, y) = 1 + 2 + 3 + …. + y if y > x, then find the value of f(0, 1) + f(2, 1) + f(2, 3) + f(4, 3) + f(4, 5) + …. + f(10, 9)?

1) 250
2) 230
3) 220
4) 240
 Which out of the following defines the relation between f(x) and g(x)?

1) f(x) = g(k + x)
2) g(x) = f(k + x)
3) g(x) = k – f(x)
4) f(x) = – k + g(x)