The position of the first and the sixth digit in the number ‘9865474362’ are interchanged, similarly the positions of the second and the seventh digits are interchanged and so on. Which of the following will be the FOURTH digit from the left end after the rearrangement? 

The diagram below represents the students who study Physics, Chemistry and Mathematics. Study the diagram and identify the region which represents students who study both Physics and Chemistry but not Mathematics?

Find the number of triangles in the figure.

In the following series find the missing numbers.
5, 13, 40, 104,?

Directions: In each of the following questions, four words have been given, out of which three are alike in some manner and the for one is different. Choose out the odd one. 

B : 16 : D : ?

Find the number at question mark in the following image?

How many rhombuses are there in the given diagram?