A can complete \( \frac{2}{3} \) of a certain work in 12 days and B can complete \( \frac{1}{4} \) of the same work in 3 days. Working together, the number of days they will take to finish the work is:
5\( \frac{1}{5} \)
8\( \frac{1}{5} \)
7 \( \frac{1}{5} \)
6\( \frac{1}{5} \)
Six friends M, N, O, P, Q and R are sitting in a row facing north. Only O is seated between P and M. Only R is seated between N and Q. M is not seated at either of the ends and not an immediate neighbour of Q. P is sitting at immediate left of O. Where is N seated?
At one of the extreme ends
2nd from the extreme left end
Immediate right of M
2nd from the extreme right end