Five friends A, B, C, D and E are standing in a row facing south, but not necessarily in the same order. Only B is between A and E. C is immediate to the right of E and D is immediate to the left of A. On the basis of above information, find the statement which is definitely true? 

The positions of how many digits in the number 2451479638 will remain same when the first half and the second half of the digits are arranged in ascending order separately?

Umesh is taller than Satish, Suresh is shorter than Neeraj in length but taller than Umesh. Who is the tallest among them?

X is more powerful than Y and Y is more powerful than Z. P is more powerful than Q but less than Y. Q is also more powerful than Z . Who is the least powerful?

Five friends are sitting in a row, looking in the south direction. Among them, Mohan is between Balu and Raju and Raju is on the immediate right of Parveen. Similarly, Amit is to the right of the Balu. Accordingly, who is on the right side?

Suresh is 7 ranks ahead of Ashok in a class of 39 students. If Ashoka's rank is 17th from the end, which rank will be from the beginning of Suresh?

During a prize distribution ceremony, Vikram was ninth from the left while Janhvi was eighth from the right in the front row. If Hariom was thirteenth from the left and was exactly in the middle of Vikram and Janhvi in the same row then what was the total number of people in the front row?

Some boys are  sitting in a row. P is sitting fourteenth from the left and Q is seventh from the right. If there are four boys between P and Q, how many boys are there in the row ?