in a school there are 1089 students. on the first day of of the annual sports of the day at the time of flag hosting, they are asked to stand in such a way that whatever is the number of rows, number of students in each row must be same (i.e. number of rows n number of columns are same). how many rows can we format with this student?
Answers
Step-by-step explanation:
◆ It is given that there are 27 flags all are kept at the place where the middle flag is posted (O)
And ruchi kept her book there
◆ So, we have to find the total distance travelled by ruchi to post all the flags from (O) which are 2m apart from each other.
◆So, we found the middle flag where ruchi kept her book(O) as 14.
◆ So, there are 13 flags on both the sides of (O).
◆ Let's find the distance travelled by ruchi on one side of middle flag suppose from 'O' to 'A'
◆ As, she have to travel again after posting one flag to position 'O'
So, we found as a1 = 4, a2= 8 ,a3= 12.........
Therefore they are in A.P since we got the difference d = 4.
◆ Now , we found the distance coved by ruchi for posting 13 flags from 'O' to 'A' as 364m.
◆ So, she also travelled 364 m on other side of the middle flag (OB).
◆ There fore, the total distance travelled by ruchi for posting 27 flags is 2×364 = 728 m.
ANS = 728 m.