main text book: operations research p. rama murthy 2nd edition

choose the correct answer:

please no need to explain. I just need the answers :)

QUESTION 9: the transportation problem is special case of linear problem ANSWER: true or false QUESTION 10: the Vogel's approximation method is used to find the optimal solution for any linear programming problem. ANSWER: true or false QUESTION 11: PERT uses three activity time values to obtain an estimate of the mean activity time. ANSWER: true or false QUESTION 12: in an unbalanced transportation problem, the total of 3 destinations is 205 units, while the total available units from 5 suppliers are 200, to balance this problem to be solved, we need to ADD a Dummy destination of 5 Units ANSWER: true or false QUESTION 13: in an unbalanced transportation problem, the total of 3 destinations is 230 units, while the total available units from 8 suppliers are 220, to balance this problem to be solved, we need to ADD a Dummy destination of 10 Units ANSWER: true or false QUESTION 14: to convert the transportation problem into maximization model we have to: ANSWER: 1. Do nothing 2. Write the inverse of the matrix 3. Multiply the matrix by -1 4. Multiply the rim requirements by -1 QUESTION 15: in transportation problem, all the constraints are related to one particular resource or commodity. ANSWER: true or false QUESTION 16: in Hungarian method of solving assignment problem, the row opportunity cost matrix is obtained by subtracting all the elements of the row form the highest element in the matrix. ANSWER: true or false