Given a = b = c = 10. Then x = log(a × b × c) = log(10 × 10 × 10) = log(1000). Using logarithm property: log(abc) = log(a) + log(b) + log(c) = log(10) + log(10) + log(10). Assuming base 10: log(10) = 1, so x = 1 + 1 + 1 = 3. The answer is 3, not log 100 or 3 ln 10.