MBA Exam

If the quadratic equations ax2 + 2cx + b = 0 and ax2 + 2bx + c = 0 (b !=c) have a common root then a + 4b + 4c is equal to

1) -2
2) -1
3) 0
4) 1
5) 2

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MBA Other Question

In Triangle PQR, the incircle touches the sides QR, RP And PQ at T,U,S respectively.If the radius of the incircle is 4 units and QT, RU, and PS are consecutive integers then what is the area of triangle?

1) 42
2) 84
3) 64
4) 96
what is the value of 'd' in N=19700019d where N is a prime number

1) 1
2) 3
3) 7
4) 9