Aptitude and Reasoning Questions

Find the value of  y(y4 - y2 - y) when y = 5.

In what ratio wheat costing Rs 17/kg mixed with another wheat costing Rs 12/kg to get a mixture costing Rs 13.5/ kg?

The denominator of a rational number exceeds its numerator by 10. If the numerator is increased by 4 and the denominator is reduced by3, the number obtained is 5/6. The original rational number is

Volume of a cylinder is 2310 cubic cm. If circumference of its base is 44 cm, find the curved surface area of the cylinder?

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:
(I) The water pollutants are rising slowly and spoiling the sanctity of water.
(II) Main cause of water pollution is industrialization and lack of sustainable approach towards environment.

Conclusions:
(I) Industries are mixing all the left-over slurries into the water body nearby causing immense pollution.
(II) Future generations are need to be thought about before getting involved in pollution causing activities.

Students from different countries (A, B, C, D, E, F) participated in a certain seminar. The pie chart shows how many students came from each of the six participating countries. Study the diagram and answer the following questions.

The biggest contingent of students was from which country?

The side BC of ΔABC is produced to D. If ∠ACD = 114° and ∠ABC= (1/2)∠BAC, then what is the value (in degrees) of ∠BAC?

If EARTHQUAKE is coded as EKAUQHTRAE then ELECTORATE will be coded as ?