Disha Expert Team Solutions for Chapter: Practice Set, Exercise 7: REASONING ABILITY

In Swartkans territory, archaeologists discovered charred bone fragments dating back one million years. Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white, stinkwood, the most common tree around Swartkans.
Which of the following, if true, would, together with the information above, provide the best basis for the claim that the charred bone fragments are evidence of the use of fire by early hominids?

Statement: It has been reported in a recent research report that taller people are found to be happier than those who are relatively shorter. Which of the following contradicts the above finding?

Statement: Many patients suffering from malaria were administered antimalarial drugs for a week. Some of them did not respond to the traditional drug and their condition deteriorated after four days. Which of the following would weaken the findings mentioned in the above statement?

Statement: The cost of manufacturing cars in state A is 30% less than the cost of manufacturing cars in state B. Even after transportation fee for the differential distances of states A and B and the interstate taxes, it is cheaper to manufacture cars in state B than state A for selling these cars in state C. Which of the following supports the conclusion drawn in the above statement?

Statement: There was a slow decline in number of patients with flu like symptoms visiting various health facilities in the city during the last fortnight. Which of the following substantiates the facts mentioned in the above statement?

Statement: It is reported that during the last fortnight there have been three cases of near miss situation involving two aircraft over the busy city airport. In all these cases both aircraft came perilously close to each other and could avoid a collision as the pilots acted just in time.

Courses of action:

I. The pilots of all the six aircraft involved in these incidents should immediately be derostered. 

Il. Some flights should be diverted to other airports for the next few months to decongest the sky over the city airport.

IlI. Air traffic controllers of the city airport should be sent for refresher courses in batches to prepare themselves to handle such pressure situations.

Statement: Exporters in the capital alleging that commercial banks are violating Reserve Bank of India directive to operate a post-shipment export credit denominated in foreign currency at international rates from January this year.

Courses of Action:

I. The officers concerned in the commercial banks are to be suspended.

II. The RBI should be asked to stop giving such directives to commercial banks.

A and B are standing at a distance of 20 km from each other on a straight East-West road. A and B start walking simultaneously, eastwards and westwards respectively, and both cover a distance of 5 km. Then, A turns to his left and walks 10 km.‘B’ turns to his right and walks 10 km and at the same speed. Then both turn to their left and cover a distance of 5 km at the same speed. What will be the distance between them?