Sets - practice problems - page 5 of 15
Number of problems found: 300
- Freezer 70664
There are a total of 38 ducks in the freezer. Of these, 24 weigh more than 1.2, and 22 ducks weigh less than 1.5. How many ducks weigh more than 1.2 and less than 1.5 kg? - Encyclopedias 69954
Children from the Mayan science club have encyclopedias and atlases at home. Everyone has at least one of them. The encyclopedia has 10 children, and the atlas has 19 children. Eight children have encyclopedias and atlases. How many children do not have a - Ways
There are five roads from village A to village B, two roads from village B to village C, and only one road directly from village A to village C. In how many different ways can you get there: A) from village A to village C via village B? B) anyway from vil - Social beneficiaries
In a certain community, 52% are SAP beneficiaries, 15% are members of 4Ps, and 8% are both SAP and 4 Ps. If a citizen from the community is an SAP, what is the probability that he is also 4Ps? If that person is not a 4Ps, what is the probability that he i - Probability 68584
There are five whites and nine blacks in the destiny. We will choose three balls at random. What is the probability that a) the selected balls will not be the same color, b) will there be at least two blacks between them? - Probability 68574
The target is divided into three zones. The probability of a shooter hitting the first band is 0.18, the second band 0.2, and the third band 0.44. What is the probability that a) hits the target, b) miss the target? - Probability 68564
What is the probability that the number a) greater than 4, b) Will the number greater than four fall on the dice roll?
- Different 66994 There are 180 balls in three different colors in the bag. What is the smallest number of marbles to be selected so that there are at least 3 of the same color among them if the marble of the same color is the same in all three colors?
- Cancer in woman population In a particular population of women, 40% have had breast cancer, 20% are smokers, and 13% are smokers and have had breast cancer. If a woman is selected at random from the population, what is the probability that she has breast cancer, smokes, or both?
- Operations 66444
Consider an experiment with a dice. Let us define the random events A={at most 3}, B={roll more than 1}, C={roll 2, 3, 4}. Determine the random event D that is given by the operations A∪B \ B∪C - Hypotenuse 65744
Construct a right triangle ABC with the hypotenuse AB: a) | AB | = 72 mm, | BC | = 51 mm b) | AB | = 58 mm, | AC | = 42 mm - All multiples Set A is a set of all multiples of 2, and set B is a set of all multiples of 3. If the P (A)=0.6 and P (B)=0.3. Find P (AUB).
- Probability Two duelists have agreed to fight at a designated location between (6:00 and 7:20). One of them will wait 8 minutes after arriving at the location and then leave. The other will wait for his opponent for 16 minutes and then leave. What is the probability
- Minutes 63474
The sunsets in the morning at 4:52 and sets at 19:37. How many minutes can't we see Sun in the sky? - Drinks In a country, 65% of people drink coffee, 50% drink tea, and 25% drink both. What is the probability that a person chosen at random will drink neither tea nor coffee?
- Employees 4 Of 125 employees, 102 are assigned to perform ONLY ONE programming job, either system programming or application programming. Ten employees are not assigned to perform any of those programming jobs. Overall, 52 employees are given to perform ONLY system p
- Corresponding
The set Z contains all natural numbers that are less than 11. Set A contains all even numbers belonging to the set Z. Set B is the set of all numbers that are multiples of 5 belonging to Z. Write all elements of the set Z in the corresponding dowry diagra - Accompanied 61384 Sixty children from the school accompanied them to celebrate the village's founding. Forty children waved with the village flag. Thirty children got waved with the coat of arms of the village. How many children received both types of lubricants?
- Face combinations
If I have 20 sets of eyes, 20 noses, and 20 months, how many unique face combinations can I make? - Unidentified 61201
The set contains 12 different figures. How many unidentified individual figures do I have to buy to have precisely two complete sets with a 90% probability after unpacking them?
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