Question

i need a question from probability

Answer 1

1

Marie is getting married tomorrow, at an outdoor ceremony in the desert. In recent years, it has rained only 5 days each year.

Unfortunately, the weatherman has predicted rain for tomorrow. When it actually rains, the weatherman correctly forecasts rain $90%$ of the time. When it doesn't rain, he incorrectly forecasts rain $10%$ of the time.

What is the probability that it will rain on the day of Marie's wedding?

A.

0.567

B.

0.111

C.

0.332

D.

0.732

2

Two squares are chosen at random on a chessboard. What is the probability that they have a side in common?

A.

1/18

B.

64/4032

C.

63/64

D.

1/9

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