Digite Infotech Interview Questions

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The B.D. and T.D. on a certain sum is Rs.200 and Rs.100 respectively. Find out the sum. A. Rs. 100 B. Rs. 200 C. Rs. 300 D. Rs. 400
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If a : b = 3 : 4, b : c = 7 : 9, c : d = 5 : 7, find a : d? A. 12:5 B. 5:12 C. 5:10 D. 10:5
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In what time a sum of money double itself at 3% per annum simple interest? A. 33 1/3 years B. 29 years C. 23 1/3 years D. 13 1/3 years
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A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:
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The angle of elevation of the sun, when the length of the shadow of a tree is equal to the height of the tree, is: A. 40° B. 45° C. 50° D. 55°
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Write the solution set of the equation x2 – 4=0 in roster form.
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