Math, asked by mohakagr2010, 9 months ago

Find the sum 75th term of the A.P 6,13/2,7,15/2,..........

Answers

Answered by tanejakca

1

a=6 d= 13/2-6=1/2
S(75)= 75/2{12+74*1/2}
=75/2*49
1837.5

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