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Bioinformatics Interview Questions and Answers
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25. If the sum of n terms of two series of A.P are in the ratio 5n+4:9n+6 .find the ratio of their 13th terms
(a) 129/231
(b) 1/2
(c) 23/15
(d) None of the above
(a) 129/231
26. If the letters of the word “rachit” are arranged in all possible ways and these words are written
out as in a dictionary, what is the rank of the word “rachit”.
(a) 485
(b) 480
(c) 478
(d) 481
(d) 481
27. Ravi’s salary was reduced by 25%.Percentage increase to be effected to bring the salary
to the original level is
(a) 20%
(b) 25%
(c) 33 1/3%
(d) 30%
(c) 33 1/3%
28. A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days.
In how many days will A alone finish the job
(a) 48
(b) 34 2/7
(c) 44
(d) 45
(a) 48
29. How long will a train 100m long traveling at 72kmph take to overtake another train
200m long traveling at 54kmph
(a) 70sec
(b) 1min
(c) 1 min 15 sec
(d) 55 sec
(b) 1min
30. What is the product of the irrational roots of the equation (2x-1)(2x-3)(2x-5)(2x-7)=9?
(a) 3/2
(b) 4
(c) 3
(d) 3/4
(a) 3/2
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