In a school assembly students are arranged in 20 rows. Number of students in the first row is 30 and each row has 5 students more than that of preceding row. find the total number of students
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the total number of students is 1560
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Answer:
ans:695
explanation:
total no of rows=20
students in 1st row=30
students in the balance rows =30+5
=35
total no.of students = 35×19+30
= 695
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