In five flats, one above the other, live five professionals. The professor has to go up to meet his IAS officer friend. The doctor is equally placed with respect to all and has to go up as frequently as he goes down. The engineer has to go up to meet his MLA friend above whose flat lives the professor's friend.

From the ground floor to the top floor, in what order do the five professionals live?

Which lecture is scheduled on Monday?

Which lecture is scheduled between Statistics and English?

Which lecture is the last one in the week?

Which lecture is scheduled on Wednesday?

Which lecture is scheduled before the Mathematics lecture?

If x = √2 + √3, then what is the value of x^2 + 1/x^2?

Consider the following statements:

1. All artists are whimsical.

2. Some artists are drug addicts.

3. Frustrated people are prone to become drug addicts.

From the above three statements it may be concluded that

Consider the following statements:

1. All machines consume energy

2. Electricity provides energy

3. Electrically operated machines are cheap to maintain

4. Electrically operated machines do not cause pollution.

Which one of the following inferences can be drawn from the above statements?

Examine the following statements:

1. None but the rich can afford air-travel.

2. Some of those who travel by air become sick

3. Some of those who become sick require treatment

Which one of the following conclusions can be drawn from the above statements?

Examine the following statements:

1. None but students are the members of the club.

2. Some members of the club are married.

3. All married persons are invited for dance.

Which one of the conclusions can be drawn from the above statements?

Examine the following statements:

1. Only those who have a pair of binoculars can become the member of the birdwatcher's club.

2. Some members of the birdwatcher's club have cameras.

3. Those members who have cameras can take part in photo-contests.

Which of the following conclusions can be drawn from the above statements?

Mr. Kumar drives to work at an average speed of 48 km/h. The time taken to cover the first 60% of the distance is 10 minutes more than that required for the remaining 40%. Find the distance to his office.

A person has only ₹1 and ₹2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is ₹75, then what is the number of ₹1 coins?

A student has an average score of N in her first three tests. In the fourth test, she scores 20 points more than this average. What is her average score for all four tests?