Question

the first row of a concert has 25 seats and each row after the first has one more seat than the row before it there are 32 rows of seats 35 students from a class want to sit in the same row in which row would the class sit??

Answer 1

so last term of AP should be 35

a=25

d is 1

l=a+(n-1)d

l=25+(n-1)1

l=25+n-1

l=35

35=24+n

n=35-24

n=11

they should sit in 11th row