In the expansion of (a \plus{} b)^n there are n \plus{} 1 dissimilar terms. The number of dissimilar terms in the expansion of (a \plus{} b \plus{} c)^{10} is:
<spanclass=′latex−bold′>(A)</span>11<spanclass=′latex−bold′>(B)</span>33<spanclass=′latex−bold′>(C)</span>55<spanclass=′latex−bold′>(D)</span>66<spanclass=′latex−bold′>(E)</span>132