Which of the following is NOT a symptom of Amoebiasis?

In each of the following questions, choose that set numbers from the four alternative sets, that is similar to the given set.

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

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

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

55 : 86 :: 37 : ?

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

GAYH : IYWJ :: FBAO : ______

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

UGLY: WJNB :: WALK:?