The Seating Arrangement
Friday, March 31st, 2017A dating club arranges meetings at concerts for its members. The club will buy a certain number of random adjacent concert seats for some male and female members. If a man sits next to a woman, the club considers this a date opportunity.
For the coming concert, the club bought 13 adjacent seats for 7 men and 6 women. Some lucky ladies could give a card with their phone number to the man or men sitting next to them.
As an average estimate, about how many cards with phone numbers do you think were given by the ladies at the concert?