MBA Exam

For how many integral values of ‘m’ does the graph of the quadratic function 2x 2+ 6x + 4 (x is a real number) and the line y = 2mx have no point of intersection?

1) 2
2) 4
3) 5
4) 6
5) infinite

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MBA Other Question

The curve y2 +2xy + 4|x| = 4 divides the x-y plane into regions. Then the area bounded by the closed region of the curve is

1) 8
2) 8*squareroot(2)
3) 16
4) 16*squareroot(2)
In a four digit no., the sum of the first two digits is equal to the sum of the last 2 digits. If the sum of the digits is 30 and the sum of the digits in units place and thousands place is twice its digit in hundreds place, then which of the following cannot be the units digit ?

1) 6
2) 9
3) 7
4) 8
5) 5