The answer is C), 834, 834.19, 834.2, 834.29
I know this is late, but I hope it was helpful!
In division, exponents with the same base are subtracted.
example:
<u>The probability that the marble will be blue if he shakes the bag and when you puts his hand into the bag, to move it around and probably he'll get the blue marble.</u>
<em>Hopefully, it correct.... :)</em>
