Correct answer: 1
In situations of uncertainty, probabilistic theory can help us give an estimate of how much an event is likely to occur or happen.

The only option (1) is the valid reason which correctly defines the use of probabilistic reasoning in AI systems.

正確答案：1
在不確定的情況下，概率理論可以幫助我們估計事件可能發生或發生的程度。

唯一的選擇(1)是正確定義AI系統中概率推理用法的有效原因。

Correct answer: 2
All i., ii., iii. and iv.

We cannot be 100% sure about the output we get on tossing a die, coin or picking a card, or the upcoming day’s temperature as it depends on various factors which are almost impossible to monitor accurately. However, probabilistic reasoning is applicable there.

正確答案：2
全部i。，ii。，iii。 iv。

我們不能百分百確定我們繼續擲骰子，硬幣或撿卡所獲得的輸出，或即將到來的一天的溫度，因為它取決于幾乎無法精確監控的各種因素。 但是，概率推理在此適用。

Correct answer: 4
All of the above

All the mentioned reasons are valid as the Probabilistic reasoning depends upon all of them.

正確答案：4
上述所有的

所有提到的原因都是有效的，因為概率論推理取決于所有這些原因。

Correct answer: 2
Estimated values

Probabilistic theory helps us to derive an estimate about how much an event is likely to occur or happen.

正確答案：2
估計值

概率理論可幫助我們得出有關事件可能發生或發生的程度的估計。

Correct answer: 1
True

It is the basic and most important law of probability that the sum of probabilities for an experiment is always 1.

正確答案：1
真正

實驗的概率總和始終為1是概率的基本且最重要的定律。