Mathematics
20.05.2022 02:28
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Three prisoners, A, B and C, are in separate cells and sentenced to death. The governor

Three prisoners, A, B and C, are in separate cells and sentenced to death. The governor has selected one of them at random to be pardoned. The warden knows which one is pardoned, but is not allowed to tell. Prisoner A begs the warden to let him know the identity of one of the others who is going to be executed. "If B is to be pardoned, give me C's name. If C is to be pardoned, give me B's name. And if I'm to be pardoned, flip a coin to decide whether to name B or C."The warden tells A that B is to be executed. Prisoner A is pleased because he believes that his probability of surviving has gone up from 1/3 to 1/2, as it is now between him and C. Prisoner A secretly tells C the news, who is also pleased, because he reasons that A still has a chance of 1/3 to be the pardoned one, but his chance has gone up to 2/3. What is the correct answer?
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krystal408
krystal408
4,7(99 marks)

The correct option is c. The given system is inconsistent.

Step-by-step explanation:

Inconsistent system: If the given system has no solutions, then it is an inconsistent system.

Consistent and independent system: If the given system has only one solutions, then it is an consistent and independent system.

Consistent and dependent system: If the given system has many solutions, then it is an consistent and dependent system.

The given equations are

y=0.5x       ... (1)

2y=x+4

Divide the second equation by 2, to rewrite the given equation in slope intercept form.

y=0.5x+2       ..... (2)

The slope intercept form of a line is

y=mx+b       ....(3)

Where, m is slope and b is y-intercept.

On comparing the (1), (2) and (3), we get the slope of first line is 0.5 and slope of second line is 0.5.

Since the slope of two parallel lines are same, therefore both the given equations are parallel and parallel equations have no solutions.

Therefore option c is correct.

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