find the number of 5 digits numbers can be formed using the digits 1,2,3,4,5 if no digit is reapeted and two adjoint digits are not together  Choices:
A) 11	B) 12	C) 13	D) 14	E) 15
13524   14253   24153   24135   25314   31425   31524   + 6 more numbers replicas of above numbers (total 12)   ANSWER:12
<result>B</result>
find the number of 5 digits numbers can be formed using the digits 1,2,3,4,5 if no digit is reapeted and two adjoint digits are not together