⚡ Build the skills to land top-paying quant jobs. Offer ends in --d --h --m --s-- days -- hours -- minutes -- seconds.
⚡ Build the skills to land top-paying quant jobs. Offer ends in 19d 05h 39m 22s19 days 5 hours 39 minutes 22 seconds.
married couples ( husbands and wives) sit at random at a round table with seats, subject to the rule that men and women alternate around the table (all such seatings are equally likely). A couple sits together if the husband and wife occupy adjacent seats. Let be the number of couples that sit together. Find . Assume .