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?  Select the correct option.
A) 12  B) 23  C) 28  D) 80  E) 84
The number of ways in which one can travel from P to R = 3 × 4 = 12   12nswer is 12
<result>A</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?