How many meaningful English words can be formed with the letters LBAE using each letter only
once in each word?
a) None b) One c) Two
d) Three e) More than three
. A group of labourers are building a villa. After half the villa has been built, double the number of labourers joins the original group. The villa is completed 8 days earlier. What is the total number of days needed to complete the wall by the initial group of men?