Math (Grade 12 Data Management)
posted by Snikkahz on .
A student is asked to make up a 6 digit number by arranging the digits 111223. What is the probability that he will pick a number that has the 2's separated?

Total number of arrangements = 6!/(3!2!)
= 60
No of ways where the 2's are together
= 5!/3!
= 20
so the number of ways the 2's are apart
= 40
so the Prob(the 2's are separated) = 40/60
= 2/3 
Thanks. =)

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