Question

Express 700.1400.2100.2800.3500.42000 in terms of factorial

Answer 1

$$700\cdot1400\cdot2100\cdot2800\cdot3500\cdot42000$$

$$=700(1)\cdot700(2)\cdot700(3)\cdot700(4)\cdot700(5)\cdot700(6)$$

$$=(700)^6(1\cdot2\cdot3\cdot4\cdot5\cdot6)$$

$$=(700)^6\cdot6!$$