Blue and Red
A jar contains 30 red balls and 50 blue balls. Two balls are randomly selected from the box without replacement. What is the probability of selecting a blue ball followed by a red ball?
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Middle School Madness
Weekly problems for middle school students ready for a challenge. These puzzles enhance logical thinking and make math exciting and rewarding.
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Individual Rankings
The first 10 to correctly answer this question are shown below.
- Mia Chen
- Isabelle Mi
- Maya M.F.
- Mia Villalobos
- Harper Mcpherson
- Dan C.
- Nolan Murphy
- Scott Busby
- Joseph Milam
- Ananda Sorrells
Leaderboard Rankings
The 10 top-ranked leaderboards for this question are shown below.
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- WeLikeTurtles!
- Mia and her multi accounts be clocking tea
- Algebra or Geometry?
- Morning Star
- Koolmath-E