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Asked by
Kyara Vargas
Chris received $1 on his first birthday,$3 on his second birthday,$6 on his third birthday,$10 on his four birthday.How much money will Chris receive on his eighth birthday if the pattern continues?
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Answered by
drwls
1+2+3+4+5+6+7+8 = 36
or, use the formula
n(n+1)/2 = $ 36 (n = 8)
Answered by
Apurva
1+2+3+4+5+6+7+8 =36
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