Two pots contain balls with numbers printed on them as shown in the diagram below.

(a) Randomly pick two different balls from the green pot then add the numbers on those balls together. What is the probability that sum is odd?

(b) Randomly pick two different balls from the blue pot then add the numbers on those balls together. What is the probability that sum is odd?

(c) Discuss the results you found for parts (a) and (b). Try to predict the results for a third pot containing eight balls numbered 1 to 8.

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Thursday, November 3, 2022

"This puzzle was inspired by Chris Smith's newsletter (Issue 609) "

James Tanton, Twitter

Friday, December 2, 2022

"

Classic: Suzzy has 2 coins. Suzie has 3. They each toss their coins. Whoever gets the most HEADS wins. In case of an equal count of heads, Suzzy wins.

— James Tanton (@jamestanton) November 27, 2022

What are Suzzy's chances of winning? pic.twitter.com/zvmoZ7jaIP

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