Question

Find the sum 24terms of the list of number whose n™term is given by an=3+2n

Answer 1

nth term = 3+2n

1st term = 3+2×1 = 5

24th term = 3+2×24 = 51

Sum of first 24 terms = 24/2×(5+51)

= 12×56

= 672

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Answer 2

Answer:

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