There are 4 boys and 2 girls. In how many ways can they be seated in a row so that all the two girls do not sit together?
Choose the correct choice from the following options:
A) 630
B) 716
C) 564
D) 846
E) 478
The required number of ways = (4+2)! - (4-2)!*2! = 6!-2!*2! = 720-4= 
<gadget id="calculator">720-4</gadget>
<output>716</output>
716   Answer is 716
<result>B</result>
There are 4 boys and 2 girls. In how many ways can they be seated in a row so that all the two girls do not sit together?