Translations of Kolmogorov Student Olympiads in Probability Theory

I am deeply interested in Kolmogorov's probability contest whose tests could be found in English for the five first years but there is no English translation to its problems from round 6 onward. I have put the links to the original Russian problems and would be grateful to the contribution of Russian speakers in this forum to translate the questions to English.

Many thanks in advance

• http://mech.math.msu.su/probab/olimpia/ol-sol.pdf
• http://mech.math.msu.su/probab/olimpia/olsol09.pdf

I have uploaded KCd's translation of the questions for year 5 and my translation of the questions for years 6-8 here.

Please let me know if anything is unclear.

This post is for links to problems in the translation that have been asked on the site:

Problem 10, 7th Kolmogorov Student Olympiad in Probability Theory
(Also previously discussed in this stats.SE question.)