QUESTION 4 Select the expression that is equal to 15C6 O 15 x 14 x 13 x 12 × 11 × 10 × 9 × 8 × 7 x 6 O 15 x 14 x 13 x 12 × 11 × 10 × 9 × 8 × 7 O 15 x 14 x 13 × 12 × 11× 10 9x8x7x6x5x4x3х 2 o 15 x 14x 13 × 12 × 11 x 10 6x5x4x3х2 O none of these choices

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