Questions and Answers

  • 5 boys and 4 girls have to stand in a line so that no two girls are next to each other. How many possible ways are there to stand in a line?


  • A college has 10 basketball players. A 5-member team and a captain will be selected out of these 10 players. How many different selections can be made?


  • Badri has 9 blue sock and 9 black socks. If he pics out 3 socks at random what is the probabillity that he will get a mathing pair?


  • In how many different ways can a mother distribute 3 different toys among her seven children if a child may recieve 0 to 3 toys?


  • How many ways are there to choose 8 coins from a pile containing 100 identical pennies and 80 identical nickels?


  • How many cards do you have to pick up from a stack of 52 cards to be sure that you can get a red card?



  1. Answer 1: 1920 ways
  2. Answer 2: 1260
  3. Answer 3: 3
  4. Answer 4: 5040
  5. Answer 5: 9
  6. Answer 6: 27


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