If 5 people meet and shak each other's hands, how many handshakes will there be

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10