A 4 b 5 c6 d n o n e o f th e s e e no t atte mp te d

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Unformatted text preview: t Atte mp te d 22.Am ol was as ked to calculate the arithm etic m ean of ten pos itive integers each of which had two digits . By m is take, he interchanged the two digits , s ay a and b, in one of thes e ten integers . As a res ult, his ans wer for the arithm etic m ean was 1.8 m ore than what it s hould have been. Then b - a equals a. 1 b. 2 c. 3 d . n o n e o f th e s e e .No t Atte mp te d 23. If x2 + 5y2 + z2 = 2y (2x + z) then which of the following s tatem ents are neces s arily true? A. x=2y. B. x=2z C.2x=z. a . O n ly A b .O n ly B a n d C c. O n ly A a n d B d . n o n e o f th e s e e .No t Atte mp te d 24. Let S denote the infinite s um 2 + 5x + 9x2 + 14x3 + 20x4 + ..., where |x| < 1 and the coefficient of xn-1 is n (n + 3), (n = 1, 2, ...). Then S equals a . (2 -x)/(1 -x)3 b . (2 -x)/(1 +x)3 c. (2 +x)/(1 -x)3 d . (2 +x)/(1 +x)3 e .No t Atte mp te d 25. Shyam vis ited Ram on vacation. In the m ornings , they both would go for yoga. In the evenings they Would play tennis . To h...
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This document was uploaded on 03/23/2014.

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