In how many way the letter of the word "RUMOUR" can be arranged  Choose the correct choice from the following choices.
A) 2520 B) 480 C) 360 D) 180 E) 470
Explanation:   In above word, there are 2 "R" and 2 "U"   So Required number will be   =6!/2!∗2!=6∗5∗4∗3∗2∗1/4=180   Option 180
<result>D</result>
In how many way the letter of the word "RUMOUR" can be arranged