- 1Each day Mr. Samms randomly chooses 2 students from his class to serve as helpers. If there are 15 boys and 10 girls in the class, what is the probability that the two students chosen will be female?
- 2for every 1 there are 3 boys taking class. If there are 236 students how do you predict the number of boys'
- 3In a class of 25 students made up of 14 girls and 11 boys, 5 students are needed to participate in relay competition
In a class of 25 students made up of 14 girls and 11 boys, 5 students are needed to participate in relay competition. What is the probability of *choosing* exactley 3 girls to participate in the relay competition?

- 4in class of x students, when 2 more boys and 7 more girls are added, the ratio of boys to girls change from 2/3 to 3/5
in class of x students, when 2 more boys and 7 more girls are added, the ratio of boys to girls change from 2/3 to 3/5. what is the value of x?

- 540% of the 25 students in the class are boys
40% of the 25 students in the class are boys. Write 40% as a fraction? Then find the ratio of girls to boys in the class. 10 of the students are boys the ratio would be 10:15?would 40% as a fraction be 4/10??

- 640% of the students in the class are boys
40% of the students in the class are boys. There are 18 less boys than girls in the class. How many students are in the class total?

- 7A class of 25 students has 10 boys
A class of 25 students has 10 boys. Three boys have braces and 4 girls have braces.a) What is the ratio of boys with braces to boys in class?b) What is the ratio of girls with braces to girls in class?c) Which group has the largest ratio of students with braces to students in class--boys or girls?

- 8
a) In a class of 10 students there are 4 boys and 6 girls
a) In a class of 10 students there are 4 boys and 6 girls. If a committee of 5 is to be selected at random, what is the probability that it consists of 2 boys and 3 girls? Show work and express your answer as a fraction in lowest terms. b) What is the probability that such a committee can be selected if 2 of the boys refuse to serve together? Explain and express your answer as a fraction in lowest terms.

- 9How many of the 28 students in Andy's class are boys, if 4/7 are girls
How many of the 28 students in Andy's class are boys, if 4/7 are girls?

- 10A class of thirty students in a school has 18 boys
A class of thirty students in a school has 18 boys. How many boys would you expect there to be in the year group of 130 students?

- 11How many of the 28 students in Andy's class are boys, if 4/7 are girls
How many of the 28 students in Andy's class are boys, if 4/7 are girls?

- 12in a class of 18 students at school there are half as many girls as boys
in a class of 18 students at school there are half as many girls as boys. How many girls are in the class? how many boys?