math text book help

An 8 th grade student is writing an online assignment. As the font of the text is not clear, he increased the font size representing a scale 1 inch : 2 inch. Find the size of the font, if the original size of the text before being changed was 0.25 in. => 0.5 in. or 2.5 in. or 1...

Question 1 - Question: From a class of 32 students, 4 are to be chosen for a competition. In how many ways can this be done? Answer: We are to select 4 students from 32. This selection can done ..

Question 21 - Question: A family of 4 brothers and 3 sisters is to be arranged in a row for a photograph. In how many ways can they be seated if all the sisters are together? Answer: Let B 1 ,B 2 ,B 3 ,B 4 denote the brothers and S 1 ,S 2 ,S 3 denote the sisters. Since the sisters are to be seated ..

Question: A boy has 3 library tickets and 8 books of his interest in the library. Of these 8, he does not want to borrow Chemistry Part II, unless Part I is also borrowed. In how many ways can he choose the three books to be borrowed? Answer: There are two ways of se..

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