With reference to the above graph, consider the following statements considering 1970 as base year:

1. Population has stabilized after 35 years.
2. Population growth rate has stabilized after 35 years.
3. Death rate has fallen by $10\%$ in the first 10 years.
4. Birthrate has stabilized after 35 years.

Which of the above are the most logical and rational statements that can be made from the above graph?

A number consists of three digits of which the middle one is zero and their sum is 4. If ‘he number formed by interchanging the first and last digits is greater than the number itself by 198, then the difference between the first and last digits is

There are 24 equally spaced points lying on the circumference of a circle. What is the maximum number of equilateral triangles that can be drawn by taking sets of three points as the vertices?

While writing all the numbers from 700 to 1000, how many numbers occur in which the digit at hundred's place is greater than the digit at ten's place, and the digit at ten's place is greater than the digit at unit's place?

A train 200 meters long is moving at the rate of 40 km/h. In how many seconds will it cross a man standing near the railway line?

If X is between –3 and –1, and Y is between –1 and 1, then $X^2 – Y^2$ is in between which of the following?

19 boys turn out for playing hockey. Of these, 11 are wearing hockey shirts and 14 are wearing hockey pants. There are no boys without shirts and pants. What is the number of boys wearing full uniform?

Two persons, A and B are running on a circular track. At the start, B is ahead of A and their positions make an angle of $30^\circ$ at the centre of the circle. When A reaches the point diametrically opposite to his starting point, he meets B. What is the ratio of speeds of A and B, if they are running with uniform speeds?

A person bought a refrigerator worth Rs. $22,800$ with $12.5\%$ interest compounded yearly. At the end of first year he paid Rs. $8,650$ and at the end of second year Rs. $9,125$. How much will he have to pay at the end of third year to clear the debt?

A student has to get 40% marks to pass in an examination. Suppose he gets 30 marks and fails by 30 marks, then what are the maximum marks in the examination?

A shopkeeper sells an article at Rs. 40 and gets $X\%$ profit. However, when he sells it at Rs. 20, he faces same percentage of loss. What is the original cost of the article?

How many diagonals can be drawn by joining the vertices of an octagon?

A bag contains 15 red balls and 20 black balls. Each ball is numbered either 1 or 2 or 3. 20% of the red balls are numbered 1 and 40% of them are numbered 3. Similarly, among the black balls, 45% are numbered 2 and 30% are numbered 3. A boy picks a ball at random. He wins if the ball is red and numbered 3 or if it is black and numbered 1 or 2. What are the chances of his winning?

If $x - y = 8$, then which of the following must be true?

1. Both $x$ and $y$ must be positive for any value of $x$ and $y$.
2. If $x$ is positive, $y$ must be negative for any value of $x$ and $y$.
3. If $x$ is negative, $y$ must be positive for any value of $x$ and $y$.

Select the correct answer using the code given below.

X and Y are natural numbers other than 1, and Y is greater than X. Which of the following represents the largest number?