Direction: In the following question, select the related letters from the given alternatives. 

QDXM : SFYN :: UIOZ : ?

Find the value  (?) in the given figure.

Find the missing number.
10, 100, 200, 310, ?

find the missing number practice test 
 

In the following question, select the number which can be placed at the sign of question mark ( ?) from the given alternatives .

Find the missing number?
15, 31, 64, 131, ?