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children and 
parents were invited to a birthday party. From all the guests, one person was randomly selected to be in charge of the gift. What is the probability that this person is not a child?
bananas, 
apples and 
. What is the probability that it will not snow tomorrow?
identical toys, of which 
are defective toys, and the other toys are marked as non-defective. What is the probability that when we buy one toy it is a defective one?
to 
. Calculate the probability that a number picked at random is not odd or divisible by 
.
balls in a bag. One ball is randomly selected from the bag. How many and what colors should the balls be in the bag so that we never pull out the yellow balls?
. What is the probability that the main prize will not be drawn? Express the result as a percentage .
chocolate balls of three different flavors, orange, coffee and caramel. 
of all chocolate balls have a caramel flavor. We choose one chocolate ball from the container. The probability of choosing an orange-flavored bead is equal to 
. Calculate the probability of randomly selecting a chocolate ball flavored with caramel or orange .
white, 
red and 
blue balls stored in a drawer. We pull three balls out of the drawer at once. Calculate the probabilities of the following events:
prizes, 
of these prizes are cash, the other prizes are merchandise. They sold all 
tickets. We bought 
tickets. What is the probability of the following events:
phones, 
are broken. We randomly select 
phones. Calculate the probability that among the selected phones:
, 
and 
. Calculate 
and 
.
, 
, 
and 
.
and 
.
, 
and 
. Calculate 
and 
.
, 
and 
. Calculate 
and 
.
boys and 
girls from A class participate, and 
boys and 
girls from B class participates. They accidentally line up. Calculate the probabilities of the following events:
playing cards.
red, 
blue and 
green balls. What is the probability that the ball is not blue?
chairs in the lecture hall, which are divided into 
rows so that each row has the same number of chairs. 
mathematics students randomly sit on the chairs: Mark, Evra, Ela, Jane, Tim, Nic, Luke and Franca.
chairs are occupied in the first row,
green and 
