Study the following information carefully and answer the question given below.
In a club of 30 people, all of them belong to at least one group - Chess, Drama and Art.6 people belong only to the Art group. 5 people belong to all three groups. 2 people have joined the Chess and the Art group but not the Drama group. 15 people belong to the Art group. 2 people have joined only the Chess group. 3 people have joined only the Drama group. 

How many people have belonged to the Chess group? 

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
 19 : 324 :: 25 : 576 :: 9 : ?

Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
cd_ab_cd_abb_dda_b

Direction: Read the following information carefully and answer the questions which follow .
A family consists of six persons . I is O ' s grandfather , O is the niece of J and N . I has three  children , a daughter and two sons . J is Q ' s sister in - law . N is unmarried . M is also a member of  this family . 

How is M related to Q ? 

If, “how are you’ is written as ‘ne ki se’ and ‘where are you’ as ‘ne bl se’ and ‘you were here’ as ‘ke ne jo’, then ‘how you here’ is written as

Select the combination of letters that when sequentially placed in the gaps of the given letters series will complete the series.
H _ _ EPCK _ _ CDEP _ KFHC _ EPC _ F

Directions: From the given alternative words, select the word which can be formed using the letters of the given word.

PRESUMPTION 

Find the missing number?