Answer:
120
Step-by-step explanation:
expand and calculate
10x9x8x7!/(10-3)!x3!
10x9x8x7!/7!x3!
reduce
10x9x8x<u>7</u>!/<u>7</u>!x3!
10x9x8/3!
Calculate the product
Now Cacluate the factorial
720/3!
720/6
Answer: 120
4 division facts
45
3 square-root 5 times 3 square-root 5 equals 45