Related Questions

The elevator in an eleven-storied office building travels at the rate of one floor per 1/4 minute, which allows time for picking up and letting down passengers. At the main floor and at the top floor the operator stops for 1 minute. How many complete (with return) trips will the operator makes during a 7-hour period?
A 50
B 60
C 80
D 90
The elevator in an eleven-storied office building travels at the rate of one floor per 1/4 minute, which allows time for picking up and letting down passengers. At the main floor and at the top floor the operator stops for 1 minute. How many complete (return) trips will the operator make during a 7 hours period?
A 50
B 60
C 80
D 90
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. Which of the following, if given to the mixing vat operator as an instruction, would not determine the setting of any other valve ?
A S must be open
B T must be open
C U must be open
Which exception is thrown when an array element is accessed beyond the array size?
A ArrayElementOutOfBounds
B ArrayIndexOutOfBoundsException 
C ArrayIndexOutOfBounds
D None of these
When a simple data type is casted to an array, an array is created with the original value in the first element.
A True
B False
Which array function checks if the specified key exists in the array?
A array_key_exist()
B array_key_exists()
C array_keys_exists()
D arrays_key_exists()
What array will you get if you convert an object to an array?
A An array with properties of that object as the array's elements
B An array with properties of that array as the object's elements
C An array with properties of that object as the Key elements
D An array with keys of that object as the array's elements
When you pass an array to a method, the method receives ________ .
A A copy of the array.
B A copy of the first element.
C The reference of the array.
D The length of the array.
The pop() method of the array does which of the following task ?
A decrements the total length by 1
B increments the total length by 1
C prints the first element but no effect on the length
D None of the mentioned
Graphical method, simplex method, and transportation method are concerned with
A Break-even analysis
B Value analysis
C Linear programming
D Queueing theory

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