Find the LCM of 25, 50 and 100.

The correct option is C 100

Using the prime factorization method:

$\begin{array}{cc}2& 25,50,100\\ 5& 25,25,50\\ 5& 5,5,10\\ 2& 1,1,2\\ & 1,1,1\end{array}$
LCM of 25, 50 and 100 $=2\times 5\times 5\times 2=100$