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已知数列{an},{bn}满足a1=b1=1,,则数列的前10项的和为A.B.C.D.
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已知数列{a
n},{b
n}满足a
1=b
1=1,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAALoAAAAxCAYAAABtebPqAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
,则数列
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAgCAYAAACRpmGNAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
的前10项的和为( )
A.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADQAAAAjCAYAAADbqynIAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADwAAAAjCAYAAADIfGk8AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADQAAAAjCAYAAADbqynIAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
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