21. A nail salon had 83 customers, 48 received a pedicure and 57 received a manicure. How many customers got both a manicure and pedicure?

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

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Captain umaima has a ship, the h. m.s. khan. the ship is two furlongs from the dread pirate nadia and her merciless band of thieves. the captain has probability 3/7 of hitting the pirate ship. the pirate only has one good eye, so she hits the captain's ship with probability 2/5. if both fire their cannons at the same time, what is the probability that the captain hits the pirate ship, but the pirate misses.