Look at this series: 2, 1, (1/2), (1/4), … What number should come next?

Look at this series: 80, 10, 70, 15, 60, … What number should come next?

D is the brother of B, M is the brother of B, K is the father of M and T is the wife of K. How is B related to T?

X is the sister of Y and Y is the brother of Z. Z is the husband of P. O is the father of Y. How P is related to O?

One day raj left home and walked 5 km northwards, turned right and walked for 10km and turned left and walked 5 km more and finally turned left and walked 10km. How many kilometres will he have to walk to reach his home straight?

Nikhil travelled from a point X straight to point Y at a distance of 50 meters. He turned to his right and walks 50 meter more, then again turned right and walks 60 meter. Finally, he turned to right and walks 50 meters. How far is he from the starting point?

In a row of children, Divya is 7th from the left and Vijay is 9th from the right. When they interchange their places among themselves, Divya becomes 18th From the left. Then what will be Vijaya's present position from the right ?

In a class of 45 students, Amirâ's rank from the top is 16th . Ashok is 6 ranks below Amir. What is Ashokâ's rank from the bottom?

Mani is thirteenth from the top and twenty seventh from the bottom in a queue. How many persons are there in the queue?