MBA Exam

If x = by + cz + du, y = cz + ax + du, z = ax + by + du, u = ax + by + cz, then find the value of the expression

1) 2
2) 1/2
3) 1
4) 3

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MBA Other Question

The Asian-Pacific plate known as “Ring of fire” because of regularity of earthquake and volcanic explosion. The geologists and scientists worked together and discovered two important equation which will determine the relation between strength of earthquake and volcanic explosion for next 50 years. They are x5 + x4 + x3 + x2 – 20x – 26 = 0 and x5 + x4 + x3 + 4x2 – 17x – 26 = 0 where x is relation coefficient of quake and volcanic explosion. Common roots are situation of worst case scenario. How many such worst case scenario exits?

1) 0
2) 2
3) 3
4) 1
What is the value of the angle BCA, if AC is a diameter of the circle and the angles CAD, BAC, BCA and ACD form an AP with CAD = 15degree?

1) 55
2) 50
3) 75
4) 85