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Find a nine-digit number which consists of all the Digits from 1 to 9 in which a number formed by first n digits is divisible By n where n is any number between 1 and 9. Maximum permissible trials are 4 after applying rules for divisibility by 2, 3, 4, 5, 6, and 8 for Elimination.

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There is a clock which is temperature sensitive.It becomes 1/2 minutes fast at the night fall and becomes 1/3 minutes late at the dawn. So It becomes total 1/6 minutes fast in a day. In the morning of 1st May, clock's timing is set. When it'll show 5 minutes fast a and b run a race of 100 yards. a beats b by 10 yards. next time, a starts 10yards behind to compensate. who wins the race?