Find the odd-one out ?

Select the option that correctly fills in the blanks and complete the series.
441, 484, 529, 576, __

Instructions: In each of the questions given below, one question and below it two statements I and II are given. You have to determine whether the data given in the statements is sufficient to answer the question or not.
Answer (A) if the data given in statement, I is sufficient to answer the question whereas data given only in statement II is not sufficient to answer the question.
 Answer (B) if the data given only in statement II is sufficient to answer the question whereas data given
 only in statement I is not sufficient to answer the question.
 Answer (C) if the data given either only in statement I or only in statement II is sufficient to answer the question.
 Answer (D) if the combined data given in statement I and statement II are not sufficient to answer the
 question.
 Answer (E) if the combined data given in statement I and statement II are necessary to answer the question.

Each of A, B, C, D and E are of different heights. Who is the third tallest among these?
I.E is only shorter than B.  
II.C is only taller than A.

Find the number of triangles in the given figure.

Select the option that is related to the fifth alphanumeric-cluster in the same way as the second alphanumeric-cluster is related to the first alphanumeric-cluster and the fourth alphanumeric-cluster is related to the third alphanumeric-cluster.
 WXY72 : ZAB29 :: CDE12 : FGH21 :: IJK30 : ? 

If DELHI is written as 73541 in the code language and CALCUTTA is written as 82589662 then how can we write CALICUT?

Directions: The question below has a statement followed by two conclusions numbered I and II. Based on this choose the option that is most suitable.
Give answer (a) if only Conclusion I is follows.
Give answer (b) if only Conclusion II is follows.
Give answer (c) if either Conclusion I or II is follows.
Give answer (d) if neither Conclusion I nor II is follows.
Give answer (e) if both Conclusion I and II are follows. 

Statement:
X has topped the graduation exams in the state by scoring 800 marks out of 1000 marks.
Conclusions
I. Nobody else in the state has scored more than 800 marks
II. The person scoring 400 marks will pass the exam.

Select the Venn Diagram that best represents the relationship between the following classes.

Flowers, Stems, Roots