MBA Exam

What is the condition for one root to be twice the other in a quadratic equation.ax2 + bx + c = 0?

1) b<sup>2</sup> = 4ac
2) 2b<sup>2</sup> = 9ac
3) c<sup>2</sup> = 4a + b<sup>2</sup>
4) c<sup>2</sup> = 9a – b<sup>2</sup>

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MBA Other Question
Answer the questions on the basis of the information given below.A sum of money ‘S’ is divided among four people A, B, C and D. Now, the following operations are performed in the given order:1. Twice the money with B is taken from A and divided equally between D and C.2. Half the money with D is taken from C and given to D.3. Thrice the money with B is taken from C and divided between A and D in the ratio 2 : 1.4. Two–fifth of the sum of money with D is taken from him and given to B.After these four operations it was found that each of A, B, C and D had the same sum of money.What fraction of the sum of money ‘S’ was received by B initially?

1) 1/6
2) 3/19
3) 1/12
4) 2/25
 P(1) =1P(2)=2, P(3) =3 , P(4)=4, P(5)=5, P(6)=6, P(7)=7P(8)=10P(9)= ?

1) 9
2) 11
3) 25
4) 23
5) CBD