Find the sum of each of the following:
3. The 100 terms given that the first term is 3 and the common difference is 3
4. First 25 terms of the arithmetic sequence 4, 9, 14, 19, 24,..
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Find the sum of each of the following:
3. The 100 terms given that the first term is 3 and the common difference is 3
4. First 25 terms of the arithmetic sequence 4, 9, 14, 19, 24,..
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Answer:
4. Solution: ( 4 + k * 5) = 25/ 2 ( 2(4) + (25-1) 5
= 25/2 (128)
= 12.5 ( 128)
= 1600
THE ANSWER IS : 1600
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