Intersection of sets - practice problems - page 9 of 11
Number of problems found: 212
- Music School Piano Violin
Ninety-seven pupils go to music school, each playing the piano or violin. Sixty-three pupils play the piano, and 58 pupils play the violin. How many students play the piano and the violin? - Function ascending descending
Write whether the function is ascending or descending and determine the coordinates of the intersection with the x and y axes: y = 3x-2 y = 5x + 5 y = -0.5x-1 - Pupils
There are 27 pupils in the classroom. They can swim 21 and ski nine pupils. Neither swim nor ski three pupils. How many pupils can swim and ski? - Probability of intersection
Three students have a probability of 0.7,0.5, and 0.4 to graduate from university, respectively. What is the probability that at least one of them will be graduated? - Small painters
There are ten pupils in the painting group. Eight pupils paint with watercolors, and nine pupils with tempera colors. How many pupils paint both water and tempera colors when each pupil paints? - Ten boys Ten boys chose to go to the supermarket. Six boys bought gum, and nine boys bought a lollipop. How many boys bought gum and a lollipop?
- Did not use
A father, mother, three children, both grandmothers, and both grandfathers were sitting at the table. Three of the family members used both a knife and a fork while eating. This is exactly half of those who used a fork, and exactly three quarters of those - At a party
At a party 12 guests left their shoes in the hallway. In total there were 6 pairs of men's shoes, 6 pairs of women's shoes, 6 pairs of brown shoes, 6 pairs of black shoes. After the party it was found that some of the shoes had disappeared. 5 men's and 5 - The Hotel
The Holiday Hotel has the same number of rooms on each floor. Rooms are numbered with natural numerals sequentially from the first floor; no number is omitted, and each room has a different number. Three tourists arrived at the hotel. The first one was in - Wafers
They used 200 pieces to make wafers. One hundred fifty-seven topped with caramel topping and 100 with sugar topping. How many wafers did both toppings have? - Marriage sttus
In our city, 3/5 of the women are married to 2/3 of the men. Find what part of the population is free. - Left handed
It is known that 25% of the population is left-handed. What is the probability that there is a maximum of three left-handers at a seminar with 30 participants? - Three Languages Students Count
Out of 100 students, 30 studied German, 28 studied German, 42 learned French, eight studied German and German, 10 German and German, and 5 German and German. How many students have learned all three languages? - Sports Probability Problem
82% of football players, and 26% are hockey players at school. What is the probability that: A) I'm not a hockey player B) I know both sports C) I know one sport - Olympiad Participants Set Problem
Out of 50 pupils, 44 solved at least one of the Olympiads - MO Mathematical Olympiad and BO Biology Olympiad. Twenty pupils still need to solve the MO. Of those who dealt with both Olympiads, 1/3 of those who dealt with just one were. How many pupils solv - Z8-I-2 MO 2018
A new pupil came into the class, about whom it was known that apart from English he still knew excellently one foreign language. Three classmates were arguing about which language it is. The first judged: "It is not French." The second guessed: "It is Spa - Party Food Drink Attendance
Twenty-nine people lost bread rolls. Eighteen people tasted the cake. Thirty-two people offered themselves drinks. Seven people had a drink with cake. Eighteen people had bread and a drink. Eight people had bread and cake. Five people offered themselves t - Mba studium
At MBA school, fourth-year students can choose from three optional subjects: a) mathematical methods, b) social interaction, c) management Each student studies one of these subjects. The mathematical methods studied 28 students, the social interaction wit - Probability 9
The wife did not come home from work on time. The husband knows from experience that with a probability of 0.3 she talked with a colleague, or with a probability of 0.6 she went shopping, or with a probability of 0.1 she was delayed for other reasons. The - Utopia Island
The probability of disease A on the island of Utopia is 40%. The probability of occurrence among the men of this island, which make up 60% of all the population (the rest are women), is 50%. What is the probability of occurrence of A disease among women o
Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.
