Sets + reason - math problems
Number of problems found: 52
In the class was 12 students. Nine students wearing trousers and turtleneck eight. How many students worn trousers with a turtleneck?
- Classroom 3
How many children are in the classroom, where 13 children are higher than Lenka and 9 children lower than Lenka?
In the class, we investigated how many children have families in which they live. How many % of pupils live in families with more than two children? If five families have one child in 9 families, have 2 children, in 5 families have 3 children, in 2 famili
Of the 35 students of the class were 7 on holiday in Germany and just as much in Italy. 5 students visited Austria. In none of these countries was 21 students, all three visited by one student. In Italy and Austria were 2 students and in Austria and Germa
- Pizza master
Master says that he can splits pizza to 16 parts by five equals straight cuts. Is it possible?
In the box were a total of 200 cookies. These products have sugar and chocolate topping. The chocolate topping is used on 157 cookies. Sugar topping is used on 100 cakes. How many of these cookies have two frostings?
Lentilka made 31 pancakes. Eight don't fill with anything, 14 pancakes filled with strawberry jam, 16 filled with cream cheese. a) How many Lentilka did strawberry-cream cheese pancakes? Maksik ate four strawberry-cream cheese and all pure strawberry panc
In the school buffet were 30 children. Twenty-one children bought sandwiches, and 15 children bought lemonade. Four children did not buy anything. How many children bought lemonade and sandwiches?
From the five girls and four boys teachers have to choose one pair of boy and girl. A) How many such pairs of (M + F)? B) How many pairs where only boys (M + M)? C) How many are all possible pairs?
In a class are 26 children. During the holidays 16 children were in the camps and 14 children on holiday with their parents. Determine the minimum and maximum number of children that may have been in the camp and on holiday with their parents at the same
- Energy saving
They were released three different, independent inventions saving 20%, 24% and 15% energy. Some considered that while the use of these inventions, the total savings will be 20% + 24% + 15% = 59%. Is this true? How much will percent of energy save all thre
A man and a woman have 3 daughters together (or - "with each other" so that step-children are excluded). Each daughter has one brother. How many members are in the immediate family?
Sets - math problems. Reason - math problems.