Probablityyy

A fair dice is rolled 2n+1 times.Find probablity that faces with even number appear odd no. of times.

4 Answers

1
°ღ•๓яυΠ·

(1-(1/2)^n)

3
msp ·

binomial distribution will help u

62
Lokesh Verma ·

it is 1/2

by pure symmetry!

62
Lokesh Verma ·

either the face with even number will appear odd no of times or the face with odd number will appear odd no of times.

If both appear odd no of times then the number of rolls will be even.
If both appear even no fo times then the number of rollls will be even too.

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