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A class has n rows of chairs, with n chairs in each row. The chairs in each row are numbered through 1 to n. Find a formula in terms of n for the number of chairs with odd number.

A class has n rows of chairs, with n chairs in each row. The chairs in each row are numbered through 1 to n. Find a formula in terms of n for the number of chairs with odd number.

Grade:12th pass

1 Answers

Arun
25763 Points
2 years ago
Dear student
 
if the chairs are like 1, 3, 5, 7....
 
then 1 + 3 + 5 + 7+ …...+ (2n – 1)
 
 = n/2 ( 1 + 2n – 1) = n2
 
Hope it helps
 
Regards
Arun

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