Which of the following numbers will replace the question

Select the figure from among the given options that can replace the question mark (?) in the following series and complete the pattern.

Choose the correct water-image, from the given alternatives:

Select the option that is related to the third term in the same way as the second term is related to the first term.

Legs : Polio :: Eyes : ?

In a certain code language, 'LAST' is coded as 'PFWY'. What is the code for 'MEAN' in that code language? 

What should come in place of the question mark (?) in the given series?

499, 498, 490, 463, 399, ?

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different.

Shivansh ranked 35th from the top and 56th from the bottom in his class. How many students are there in his class?

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

(6, 4, 6)

(18, 9, 13)