as I read this one, they listed their sales as 1700, BUT the scale for those numbers are that each 1 is a "100", namely, they're on a 1:100 scale, so the 1700 is really 1700 * 100, or 170000.
170,000 is 170 * 1000, or 170 thousands.
Answer: The probability is about 0.2%.
The probability of flipping heads one time is 0.5, 50% or 1/2.
To flip heads 9 times in a row, we have to multiply 1/2 by itself 9 times.
(1/2)^9 = 1/512 or about 0.2%
It should only happen once every 512 times.
There are 5
hope that this helps and good luck