A. Express the following product in simplest factorial form<br />1. 1.2.3. ... .8.9. 10<br />2. 15.14 - 13 ... 4.3. 2 - 1<br />:<br />3. 9.8.7.6!<br />4. 54.53.52 · 51!<br />5. (r) (r – 1). (r - 2) (r = 3) · ... : 3 · 2 · 1

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