21. For the FIFA world cup, Paul the octopus has been predicting the winner of each match with amazing success. It is rumored that in a match between 2 teams A and B, Paul picks A with the same probability as A's chances of winning. Let's assume such rumors to be true and that in a match between Ghana and Bolivia, Ghana the stronger team has a probability of 2/3 of winning the game. What is the probability that Paul will correctly pick the winner of the Ghana-Bolivia game?
Answer: 5/9
Explanation:Here is no explanation for this answer
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22. 36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is
Answer: 18
Explanation:Here is no explanation for this answer
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23. After the typist writes 12 letters and addresses 12 envelopes, she inserts the letters randomly into the envelopes (1 letter per envelope). What is the probability that exactly 1 letter is inserted in an improper envelope?
Answer: 0
Explanation:Here is no explanation for this answer
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24. A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
Answer: 8/15
Explanation:Here is no explanation for this answer
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25. If VXUPLVH is written as SURMISE, what is SHDVD ?
Answer: PEASA
Explanation:in the first word, the alphabets of the jumbled one is three alphabets after the corresponding alphabet in the word SURMISE. S = V-3, similarly find the one for SHDVD
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26. If DDMUQZM is coded as CENTRAL then RBDJK can be coded as __________.
Answer: QCEIL
Explanation:Write both the jumbled and the coded word as a table, find the relation between the corresponding words, i.e C= D-1, N=M+1 & so on
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27. In the word ECONOMETRICS, if the first and second , third and forth ,forth and fifth, fifth and sixth words are interchanged up to the last letter, what would be the tenth letter from right?
Answer: N
Explanation:word is CENOMOTEIRSC tenth word is N
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28. Find the result of the following expression if, M denotes modulus operation, R denotes round-off, T denotes truncation: M(373,5)+R(3.4)+T(7.7)+R(5.8)
Answer: 19
Explanation:Modulus gives a remainder: M(373,5) = 3, since 5*74 = 370 Rounding rounds to the nearest integer: so R(3.4) = 3, and R(5.8) = 6 and Truncation 'rounds' to an integer by removing any decimal fractions, so T(7.7) = 7 adding the answers above gives 3+3+6+7 = 19
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29. Find the missing number in the series: 2, 5, __ , 19 , 37, 75
Answer: 9
Explanation:Here is no explanation for this answer
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30. In a certain code, '37' means 'which class' and '583' means 'caste and class'.What is the code for 'caste'?
Answer: either 5 or 8
Explanation:37....=> which class
583....=>caste and class
in the above 2 statements CLASS is common=>code of class=3 then code of CASTE may be either 5 or 8
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