Find the sum of the given arithmetic sequences.
4. 8,13,18,...find S41.
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4. 8,13,18,....find S41 I donot know sorry
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Answer:
here a = 8
d = 5
S = n/2[2a + (n − 1) × d
S= 41/2 [16 + (40*5)]
S= 4428
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