Step-by-step explanation:
Hope dis helps you......
Significant digits are all digits, after the comma, excluding the first if this first is Zero
So the number of significant digits is 3 (1,0,2)
The answer is A and B. I showed my work below. I hope it makes sense. Let me know if you have any questions.
The answer is 1680. To get this you do 8*7*6*5 because there are 8 options for the first character, and then you can repeat that for the second one with 7, 6, and 5