Report - - WordPress.com...8 ABCD GTåTD AC, BD -631 E F Grar 3.9 2 I. nP4 = 20 . nP3 n- ærTåTã. 2. nC4 = nC6 12Cn 3. IOPr = 5040 r-âår 4. 5 I. 5Pr= 6Pi--l r - 7x—1 3. 1013 993 4 ...

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