# koch Interview Questions

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###### A man’s age is 125 % of what it was 10 years ago, but 83 1 3 % of what it will be after 10 years. What is his present age? A. 40 B. 50 C. 60 D. 70
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###### If every element of a group G is its own inverse, then G is A. abeian B. cyclic C. finite D. infinite
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###### In a 300 m race, A beats B by 22.5 m or 6 seconds. B’s time over the course is: A. 20 sec B. 40 sec C. 60 sec D. 80 sec
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###### If set A = {1, 3, 5}, B = {2, 4, 6} and C = {0, 2, 4, 6, 8}. Then write the universal set for all three sets.
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###### Let A = {0, 1} × {0, 1} × {0, 1} and B = {a, b, c} × {a, b, c} × {a, b, c}. Suppose A is listed in lexicographic order based on 0 < 1 and B is listed in lexicographic order based on a < b < c. If A×B A. ((1, 0, 0),(b, a, a),(0, 0, 0)) B. ((1, 0, 0),(a, a, a),(0, 0, 1)) C. ((1, 0, 0),(a, a, a),(1, 0, 0)) D. ((1, 0, 0),(a, a, a),(0, 0, 0))
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