bad math teachers

Question: For the post of 5 teachers, there are 23 applicants. 2 posts are reserved for S.C. candidates and there are 7 S.C. candidates among applicants. In how many ways can the selection be made? Answer: There are 23 applicants. Among this, 7 are S.C. candidates. We have to ..

There are 6 teachers for every 240 students in a school. Identify the ratio of students to teachers in three ways. => 1 : 40, 1 to 40, and 1 40 or 41 : 1, 41 to 1, and 41 1 or 40 : 1, 40 to 1, and 40 1 or 42 : 1, 42 to 1, and 42 1..

A school has 15 teachers out of which 9 are male. A team of 9 teachers is to be formed with 5 female teachers. In how many ways can the team be formed? => 776 or 746 or 756 or 766..

If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001, then determine the probability that out of 2,000 individuals atleast 3 will suffer a bad reaction. => 0.675 or 0.18 or 0.224 or 0.325..

A teacher had a stack of notebooks. If there were 25 books in the stack and the teacher distributed them evenly among five of her favorite students, then how many books would each student get? => 3 or 10 or 5 or 8..

There are 5 teachers for every 20 students in a class. Which one of these represents the ratio of students to teachers? => 1 : 2 or 1 : 4 or 2 : 1 or 4 : 1..

Danielle wants to attend dance and music classes after school. There are 4 dance teachers and 9 music teachers available to choose. How many different choices are available for Danielle to choose the two teachers? => 4 or 9 or 36 or 37..

Identify the concept discussed. There are 5 teachers for every 20 students in a class. => proportion or rate or not enough information or ratio..

The scatter plot shows the number of teachers hired each year from 1980 through 1984. How many more teachers were hired in the year 1981 than those in 1982? => 10 or 15 or 6 or 20..

The average teacher's salary in a school X is $30,000. The distribution is assumed to be normal with standard deviation equal to $5,000. If 64 teachers are selected at random, then find the probability that the mean teacher's salary is less than $28,000. => 99.93% or 7..