Brain Challenge

Week 448 (19th June 2026) 

Week 448 (19th June 2026) 

 A jar contains 100 marbles. 

20 of the marbles are red.  

40 of the marbles are blue. 

The rest of the marbles are green. 

A marble is randomly selected from the jar. 

Work out the probability that the marble is green. 

Answer: 

Total marbles = 100 

Green marbles = 100 – 20 – 40 = 40 

Probability= 40 / 100 = 0.40 

Answer: 0.4 or 40%

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