Quantitative Aptitude

$1200 = 10 \times 120 = 2^4 \times 3^1 \times 5^2$. Multiples of 10 can be written as $10 \times k$ where $k$ divides $120 = 2^3 \times 3^1 \times 5^1$. Number of such factors = $(3+1)(1+1)(1+1) = 4 \times 2 \times 2 = 16$.