CBSE Class 10 Sample Paper for 2023 Boards - Maths Standard

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Question 37 (iii) - CBSE Class 10 Sample Paper for 2023 Boards - Maths Standard - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 13, 2024 by

If there were 17 rows in the auditorium, how many seats will be there in the middle row?

 

Q37(iii) - 1st - If there were 17 rows in the auditorium, how many seats.jpg Q37(iii) - 2nd slide - how many seats in middle row.jpg

 

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Transcript

Question 37 (iii) If there were 17 rows in the auditorium, how many seats will be there in the middle row? If total number of rows are 17 Middle row = 9th row We need to find how many seats will be there in the middle row i.e. we need to find a9 We know that an = a + (n − 1)d Putting n = 9, a = 30, d = 10 a8 = 30 + (9 − 1) × 10 = 30 + 8 × 10 = 30 + 80 = 110 Thus, there are 110 seats in the middle row

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo