The letters L, M, N, 0, P, Q, R, S and T in their order are substituted by nine integers 1 to 9 but not in that order. 4 is assigned to P. The difference between P and T is 5. The difference between N and T is 3. What is the integer assigned to N?

A group of 630 children is seated in rows for a group photo session. Each row contains three less children than the row in front of it. Which one of the following number of rows is not possible?

Consider that:

1. A is taller than B.
2. C is taller than A.
3. D is taller than C.
4. E is the tallest of all.

If they are made to sit in the above order of their height, who will occupy the mid position?

Examine the following statements:

1. George attends Music classes on Monday.
2. He attends Mathematics classes on Wednesdays.
3. His Literature classes are not on Friday.
4. He attends History classes on the day following the day of his Mathematics classes.
5. On Tuesday, he attends his Sports classes.

If he attends just one subject in a day and his Sunday is free, then he is also free on