6 years ago, Raju's age was 2 years less than half of his brother's age, which was 20 years. What is his present age?

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

If White is called Red, Red is called Blue, Blue is called Green, Green is called Yellow, Yellow is called   Black, Black is called Orange and Orange is called Pink, What would be the colour of human blood?

_ zy_zxy_yxzx_zyx_sy 

find the missing number practice test 
 

Daily in the morning the shadow of Gol Gumbaz falls or Bara Kaman and in the evening the shadow of Bara Kaman falls on Gol Gumbaz exactly. So, in which direction is Gol Gumbaz to Bara Kaman?

A letter series is given below in which some letter are missing. Select the  option that gives the letters that can fill these blanks in that order.
a_ca_bab_ad_abc_db

In each of the following questions, which one of the four interchanges in signs and numbers would make the given equation correct?
( 3÷4 ) + 2=2