If significant digits are used to compute the product of 0.105 and 1000.2000, how many significant digits are there in the answer? A. 0 B. 1 C. 2 D. 3

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.