find the sum of 31 terms of an ap. whose n term is given by3+2/3n
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Answer:423 2/3 or 423.67
Step-by-step explanation:
First term is 3+2/3 = 11/3
31st term is 3+2*31/3 =71/3
sum=n/2(a1+a31)
=31/2(11/3+71/3)
=31/2(82/3)
=423 2/3 or 423.67
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