Traditional Culture Encyclopedia - Tourist attractions - When a guest travels to Beijing, the probability of going to the Great Wall, the Forbidden City and the Bird's Nest is 0.9, 0.8 and 0.8 respectively.

When a guest travels to Beijing, the probability of going to the Great Wall, the Forbidden City and the Bird's Nest is 0.9, 0.8 and 0.8 respectively.

( 1)0.58

(2)0.42

(1) Remember that guests visit the Great Wall, the Forbidden City and the Bird's Nest as events A, B and C respectively.

Independent of each other.

For mutually exclusive events: One happened. [Source: Xue # Ke # Net]

...................... scored six points.

(2)

The function monotonically increases in the interval, which is derived from the meaning of the question, that is,

The possible values known from this topic are 1 and 3.

? .............. 12 point