2010015504
Level:
B
Two regular dice are thrown. Find the probability that the sum is eight or nine. The results are rounded to two decimal places.
Probability
2010015503
Level:
B
Four participants of a target shooting competition do hit the target with hitting probabilities:
2010015502
Level:
B
A set of Christmas tree lights contains
2010015501
Level:
B
Three identical light bulbs are connected to the battery as shown in the electrical circuit diagram. The reliability of each of the bulbs is
2000004706
Level:
A
What is the probability of getting three heads in three coin tosses?
2000004705
Level:
A
A distracted secretary prepares three envelopes and types three different letters for three different people. Then she randomly places the letters in the prepared envelopes. What is the probability of at least two recipients receiving the right letter?
2000004704
Level:
A
There is a wooden cube with faces painted in green. Its edge is
2000004703
Level:
A
There is a wooden cube with faces painted in green. Its edge is
2000004702
Level:
B
A part of a rectangle drawn on the wall is painted in yellow (see the picture). Imagine a bee landing on a random spot of the rectangle. What is the probability of the bee landing on the yellow part?
2000004701
Level:
B
In case a clock runs out of batteries, what is the probability of the minute hand stopping anywhere between
