Elementary Brain Teaser

Fun and accessible problems for younger students or beginners. Posted every Monday, these weekly brain teasers kickstart your week with a mental warm-up.

100 Prime

Posted: March 4, 2024

50 % of users got this correct

A number from 1 to 100 (inclusive) is selected at random. What is the probability that the number selected is a prime number that contains the digit 9?

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