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answer?

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4
7 r+ T' U6 X- E: X5 fingers with 4 gaps,% v- h6 P9 L: r+ H. E, U2 w" I
So, half of 5 fingers is 2 gaps (3 fingers)$ _* R8 @* t5 |0 z" u5 W6 N0 y. L
Then 10 fingers is 9 gaps5.39.217.767 c6 Y8 z, P& x- F9 @3 ^
And so, one-third of 10 fingers is 3 gaps (4 fingers)

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