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If in the drama club picture the students must line up in rows with the same number of students describe the arrangements for the least number of people needed to be able to line up in rows of 5 or 6?
If they can stand in rows of 5 the total number must be a multiple of 5. Also, if they can stand in rows of 6 the total number must be a multiple of 6. The smallest such number is the least common multiple of 5 and 6, which is 30. So there can by 6 rows of 5-in-a-row or 5 rows of 6-in-a-row.
How many ways can 180 books be arranged in rows containing an equal number of books?
1 row of 180 - 2 rows of 90 - 3 rows of 60 - 4 rows of 45 - 5 rows of 36 - 6 rows of 30 - 9 rows of 20 - 10 rows of 18 - 12 rows of 15 - 15 rows of 12 - 18 rows of 10 - 20 rows of 9 - 30 rows of 6 - 36 rows of 5 - 45 rows of 4 - 60 rows of 3 - 90 rows of 2 - 180 rows of 1 - total of 18 ways within the limits of the question
How many ways can a gardener plant 30 trees in rows so that each row contains the sames number of trees?
Six ways. 15 rows of 2 trees 6 rows of 5 trees 3 rows of 10 trees and 2 rows of 15 trees 5 rows of 6 trees 10 rows of 3 trees * * * * * How about 1 row of 30 trees and 30 rows of 1 tree each?
What does 4 by 6 array mean?
4 rows of 6 columns or 4 columns of 6 rows !
How can you draw 15 squares in equal rows?
Draw either 3 rows of 5 columns or 5 rows of 3 columns.
