In how many ways can the letters of the CHEATER be arranged	Choose the correct choice from the following options.
A) 20160	B) 2520	C) 360	D) 80	E) None of these
Explanation:   As we can see the letter "E" is twice in given word, so Required Number   =7!/2!=7∗6∗5∗4∗3∗2!/2!=2520   Option 2520
<result>B</result>
In how many ways can the letters of the CHEATER be arranged