MBA Exam

If x = a(b – c), y = b(c – a) and z = c(a – b), then find the value of (Here x, y and z all are non-zero numbers.)

1) 1/abc
2) 27/abc
3) 3/abc
4) 9/abc
5) 1/3abc

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MBA Other Question

Given f(x) = a|x| - bx2 where a and b are constants.Find f(x) at x = 0 :

1) Maximum when a > 0 , b > 0
2) Maximum when a > 0 , b < 0
3) Minimum when a > 0 , b > 0
4) Minimum when a < 0 , b < 0
5) Minimum when a > 0 , b < 0
from a circular sheet of paper of radius 10 cm , a sector of area 40 % is removed. if the remaining part is used to make a conical surface then ratio of the radius and height of the cone is .....plz explain...

1) 1:2
2) 1:1
3) 3:4