#### Answer

1260

#### Work Step by Step

The number of permutations of n items, where p items are identical, q items are
identical, r items are identical, and so on, is given by
$\frac{n!}{p!q!r!}$
The number of distinct ways the letters of the word SCIENCE can be arranged:
$\frac{7!}{2!2!}$ = $\frac{7*6*5*4*3*2*1}{2*1*2*1}$ = 1260 ways