There are three places P, Q and R such that 3 roads connects P and Q and 4 roads connects Q and R. In how many ways can one travel from P to R?  Choose the correct choice from the following choices: A) 32 B) 75 C) 12 D) 51 E) 47
Number of ways in which one can travel from P to R   =3×4=12=3×4=12   Ans: 12
<result>C</result>
There are three places P, Q and R such that 3 roads connects P and Q and 4 roads connects Q and R. In how many ways can one travel from P to R?