In how many ways can 5 boys and 2girls be arranged at a table if 2girls are never together?
Choose the correct choice from the following answers.
A) 329
B) 350
C) 378
D) 390
E) 480
Total ways of arranging 7 person in a circle = 6! = 720 ways   If we consider two women as one, then we have   5+1= 
<gadget id="calculator">  5+1</gadget>
<output>6</output>
6 persons. Arranging these six persons in circle will take= 5! = 120 ways   And two women can arrange themselves in 2! ways   Total ways in which two women sit together in circle = 5!*2! = 240 ways   Total ways in which two women doesn’t sit together in circle = 6! - 5!*2! = 720 - 240= 
<gadget id="calculator">720 - 240</gadget>
<output>480</output>
480 ways   480
<result>E</result>
In how many ways can 5 boys and 2girls be arranged at a table if 2girls are never together?