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![Easy] Formulas for Sums of Equal Ratio Sequences [with exercises] that you will never forget.](https://i.ytimg.com/vi/dJgU0SJtXuM/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLANlpn_olGpYLQUIXycBhwIztjcAw)
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Easy] Formulas for Sums of Equal Ratio Sequences [with exercises] that you will never forget.
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