candyme
Express 1+2+4+8+16+32 in sigma notation



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freckles
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\[2^0+2^1+2^2+2^3+2^4+2^5+\cdots \]
Do you see this pattern?

candyme
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Oh, is it 2^k?

freckles
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\[\sum_{k=0}^{5}2^k \text{ yep! }\]

candyme
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Thanks for your help!