14-05-2015
Mathematics

contestada

Let n be a randomly selected integer from 1 to 20. Find the indicated probability.

n is prime given that it has two digits, what is n?

Respuesta :

wisewolf wisewolf

14-05-2015

there us 11 two digit numbers between 1 and 20.
4 of them are prime: 11, 13, 17 and 19

so probability is 4/11

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