MBA Exam

Three horses : Kanishka, Silver Streak and Arabian Knight are the only horses competing in a race. If Kanishka is twice as likely to win as Silver Streak and Sliver Streak is twice as likely to win as Arabian Knight, then with what probability does Arabian Knight lose this race?

1) 4 / 7
2) 6 / 7
3) 5 / 7
4) 1 / 7
5) Cannot be determined

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MBA Other Question
In a test of 50 questions, for every correct answer one gets 1 mark and for every wrong answer one incurs a penalty of 1/n marks, where n is a positive integer. No marks are awarded for unattempted questions. If 336 distinct scores are possible in this test, then, ‘n’ satisfies

1) 1 ≤ n ≤ 4
2) 9 ≤ n ≤ 12
3) 11 ≤ n ≤14
4) 5 ≤ n ≤ 8
 How many words can be formed from the letters of the word 'DAUGHTER' so that the vowels never come together ?the answer seems obvious 8!-6!3!but if we ponder from a different perspective, that is taking 5consonants first and arranging them (5! ways of doing that) and thenplacing the 3 vowels in the 6 places created due to the arrangement ofconsonants (6P3 ways to do that), the answer should be 5!*6P3...........Figure out the flaw in the reasoning.... if at all, for this doesn't lead to the right answer....

1) 36000
2) 14400
3) 41000
4) 36900