Read the following paragraph carefully and answer the question based on the information provided in it.

Population explosion needs controlled measures to manage earth's resources. We must find ways to utilize the natural resources in an efficient manner to satisfy the ever-growing needs of the people. Solar energy may be used to replace the increasing demand for fuels like coal, wood and so on. Rainwater harvesting is a must to meet the water needs of the urban population. If we deplete the earth of its resources at such a fast pace, sooner or later we will have to search for another planet that can sustain life like earth.

Which of the following is true according to the paragraph?

If Rs. 2,000 is invested at the rate of 20% per annum, compounded half-yearly, then the amount after 18 months will be:

The bar graph shows the number of soldiers in the armies of different countries. Study the diagram and answer the following questions.

If country D spends $20000 per soldier annually, then how much does it spend (in $ millions) on all its soldiers annually?

Which of the following cube in the answer figure cannot be made based on the unfolded cube in the question figure?

Which of the following statements are CORRECT?

I. The soap molecules form structures called micelles.

II Soap micelles cannot scatter light.

III. Oily dirt gets collected in the center of the micelle.

The angle of elevation of the top of a 36 m tall tower from the initial position of a person on the ground was 60 deg. She walked away in a manner that the foot of the tower, her initial position and the final position were all in the same straight line. The angle of elevation of the top of the tower from her final position was 30 deg. How much did she walk from her initial position?

Consider the given argument and decide which of the given assumptions is (are) implicit.

Argument :

A top television company announced up to 50% discount on their new launch of LED TV.

Assumptions :

1. The sales of the LED TV may increase.

2. The company will become the top seller of the LED TV.

A sum of Rs 800 becomes Rs 1000 in 2 years at simple interest. What is the per annum rate of interest (in percent)?