ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 21 (Linear Inequalities and Linear Programming)

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ECAT Mathematics Chapter 21 Important MCQ's

Sr.#	Question	Answer
1		A. p < r B. p > rr C. p + r < 0 D. p - r < 0
2	For graphing a linear inequality, solid line is drawn if the inequality involves the symbols:	A. > or < B. > or < C. = or≠ D. = or >
3	Optimize means ______ a quantity under certain constraints	A. Minimize B. Maximize C. Maximize or minimize D. None of these
4	A farmer possesses 100 hectometers of land and wants to grow corn and wheat. Cultivations of corn requires 3 hours per hectometer while cultivation of wheat requires 2 hours per hectometer. Working hours cannot exceed 240. If he gets a profit of Rs. 20 per hectometer for corn and Rs. 15 per hectometer for wheat. The profit function for the farmer is	A. P(x, y) = 20x + 15y B. P(x, y) = 2x + 3y C. P(x, y) = x + y D. P(x, y) = 3x + 2y
5	A point (x,y) which satisfy a linear inequality in two variables form its	A. Solution B. Domain C. Range D. None
6	The points (x, y) which satisfy a linear inequality in two variables x and y from its	A. domain B. range C. solution D. none of these
7	The solution set of x < 4 is	A. -∞< x < 4 B. -∞> x > 4 C. -∞< x < 2 D. -∞> x > 2
8	x = -1 is in the solution of the inequality	A. x + 5 < 0 B. 2x + 3 < 0 C. x > 0 D. 2x + 3 > 0
9	The maximum value of Z = 3x+ 4y subjected to the constrains x+ y≤ 40,x+ 2y≤ 60, x≥ 0 and y≥ 0 is	A. 120 B. 100 C. 140 D. 160
10	A ________ divides the plane into left and right half planes.	A. Vertical line B. Horizontal line C. Non vertical line D. Inequality