What should come in place of the question mark '?' in the following number series?
 2916, 972, ?, 108, 36, 12

Complete the series choosing the missing number:

3, 15, 63, 255, 1023, ______

If ‘+’ means ‘-‘, ‘-‘ means ‘x’, ‘x’ means ‘÷’ and ‘÷’ means ‘+’, then what will be the value of the  following expression?
27 – 2 + 24 × 8 ÷ 4

In each of the following questions, five words are given. Which of them will come in the middle if all of them are arranged alphabetically as in a dictionary?

Read the following information carefully and answer the questions given below.
'3+2' means '3 is the father of 2'.
'3 – 2' means '3 is the sister of 2'.
'3 × 2' means '3 is the husband of 2'.
'3 ÷ 2' means '3 is the wife of 2'.

In a certain code language, "come at once mother very sick" is written as "XLNV ZG LMXV NLGSVI EVIB WJXP". What is the code for "sister"? 

Raj travelled from a point X straight towards east to Y a distance of 80 meters. He turned right and walked 50 meters, then again turned right and walked 70 meters. Finally, he turned right and walked 50 meters. How far is he from the starting point?

DIRECTIONS: Study the following arrangement carefully and answer the questions given below.
W 3 # R @ E J K T 4 B 9 I H D U 8 1 H % A V 5 δ 7 M P 2 Q $ 6

If all the symbols in the above arrangement are dropped, which of the following will be the fourteenth from the left end? 

Question Figure