Answer: B) Gitanjali Rao Explanation: Gitanjali Rao, an 11-year-old Indian-American schoolgirl, was named as "America’s top young scientist" for inventing a cost-effective, quick lead-contamination detector in water. The seventh-grade student was inspired by the large-scale lead contamination in water in Flint, Michigan, that came to light recently.

Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

Mercedes's language in reference to the story "Call of the Wild" actually means civilization. She had brought numerous belongings along with her and they were much more than the dogs could pull. Her decision of not parting with any of the belongings would ultimately lead to her death. One can easily draw a clear difference between civilization and wildness.

Answer: A) Hooghly River Explanation: The boring of India’s first underwater rail tunnel under the Hooghly River for establishing metro link between Howrah and Kolkata has completed before its scheduled deadline of July 2017. The tunnel is 16.6 km long, out of which 10.8 km runs under the ground. Of this 10.8 km, 502 metres is under the water and the whole thing connects Howrah to the west and Salt lake to the east. It will have 12 stations and six will be underground. Estimated cost of the entire project is $750 million or about Rs 5,000 crores. The final commissioning of the project is expected by December 2019, following which it will be operational. The project is built by Afcons Transtonnelstroy and implemented by Kolkata Metro Railway Corporation Ltd (KMRCL).

Answer: C) 2:3 Explanation: Let p be the principle amount And R% be the rate of interest Then, required ratio =P×4×R100P×6×R100    ⇒4PR6PR= 2:3

Answer: D) Both a and b sufficient Explanation: Let the sum be Rs. x a. gives, S.I = Rs. 9000 and time = 9 years. b. gives, Sum + S.I for 6 years = 2 x Sum --> Sum = S.I for 6 years. Now, S.I for 9 years = Rs. 9000 S.I for 1 year = Rs. 9000/9 = Rs. 1000. S.I for 6 years = Rs. (1000 x 6)= Rs. 6000. --> x = Rs. 6000 Thus, both a and b are necessary to answer the question.

Answer: D) All the above Explanation:

The interviewer wants to know that you don't just jump into a solution without knowing the problem in detail. You want to study the problem by determining the cause of the problem, what the problem is, and what the possible solutions are. You then decide on a solution.Following steps for problem-solving and decision-making can be very helpful.- Define the problem to be solved and decision to be made.- Gather the necessary information. - List all possible choices. - Consider possible outcomes for each choice. - Check out how you feel about each of the choices. - Relate the choices to your values and priorities. - From the possible alternatives, choose one. - Commit yourself to your chosen decision and disregard the others. Concentrate your energies   in one direction. Once we made our decision, we must focus all our work on that itself.- Take steps to turn your decision into positive action. - Evaluate your progress from time to time. Change your decision if necessary.