Question 3 :
If  x + y = 3 and xy = 2, then the value of $\displaystyle x^{3}-y^{3}$ is equal to 

Question 4 :
<div><span>The given table shows the number of cars manufactured in four different colours on a particular day. Study it carefully and answer the question.</span><br/><table class="table table-bordered"><tbody><tr><td rowspan="2">&#160;<b>Colour</b></td><td colspan="3"><b>&#160; &#160;Number of cars manufactured</b></td></tr><tr><td><b>&#160;Vento</b></td><td><b>&#160;Creta</b></td><td><b>WagonR&#160;</b></td></tr><tr><td>&#160;Red</td><td>&#160;65</td><td>&#160;88</td><td>&#160;93</td></tr><tr><td>&#160;White</td><td>&#160;54</td><td>&#160;42</td><td>&#160;80</td></tr><tr><td>&#160;Black</td><td>&#160;66</td><td>&#160;52</td><td>&#160;88</td></tr><tr><td>&#160;Sliver</td><td>37</td><td>&#160;49</td><td>&#160;74</td></tr></tbody></table></div>What was the total number of black cars manufactured?

Question 7 :
What is the solution of $x\le 4,y\ge 0$ and $x\le -4,y\le 0$ ?

Question 8 :
<span>In linear programming, lack of points for a solution set is said to</span>

Question 10 :
The solution of the set of constraints of a linear programming problem is a convex (open or closed) is called ______ region.

Question 12 :
<span>The number of constraints allowed in a linear program is which of the following?</span>

Question 13 :
If two constraints do not intersect in the positive quadrant of the graph, then

Question 14 :
<span>Which of the following is a property of all linear programming problems?</span>

Question 15 :
Solution of LPP to minimize z = 2x + 3y, such that $x \geq 0, y \geq 0, 1 \leq x + 2y&nbsp; \leq 10 $ is