teachers answer book for consumer mathematics

Question: From 12 books, in how many ways can 5 be chosen i. to surely include a particular book ii. never to include a particular book iii. to have no restrictions at all? Answer: i. To include a particular book, one particular boo..

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. W..

The given tally chart shows the numbers of parents who attended the parent-teachers meeting conducted in a school each month. Choose the appropriate label for the left side of the graph. => Number of drinks sold or Number of vegetables sold or Number of books or Number of parent..

Mr. Andrew was undergoing an obesity program, in which he was allowed to consume 1575 calories per day. How many more calories should he consume for that day, if he already consumed 1400 calories? => 175 or 160 or 150 or 200..

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..

Francis consumes 3 liters of water per day. In how many days will he consume 9 liters of water? => 3 or 5 or 4 or 2..

Justin consumes 2 liters of water per day. In how many days will he consume 8 liters of water? => 4 or 5 or 3 or 6..

The scatter plot shows the number of teachers hired each year from 1980 through 1984. How many more teachers were hired in the year 1983 than those in 1984? => 10 or 5 or 15 or 20..

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..