in an ap the sum of first n term is 3n²/2+5n/3.find its 25 terms
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A25=S25-S24
That is the 25th term =sum of first 25 terms - sum of first 24 terms
S25=3*625/2+5*25/2
=1875/2+125/2=2000/2=1000
S24=3*576/2+5*24/2
=1848/2=924
A25=S25-S24
=1000-924
=76
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